Unrein and Adshade On October 17, 1973, Gretzler and Steelman returned to Unrein's address. Both Unrein and Adshade were forced at gunpoint into Unrein's
Volkswagen van. Upon Steelman's instructions, the four drove to California. Neither Unrein or Adshade were bound, although Gretzler and Steelman alternated between driving and sitting in the passenger seat pointing a gun at the two. By the following morning, they had reached
Oakdale, where Steelman purchased beverages for all. After driving aimlessly for several hours, Steelman ordered Gretzler to park the van close to Littlejohn Creek in
Knights Ferry, where both captives were ordered out of the van and told to walk down a creek bed. At this point, one of the two captives asked, "What's gonna happen, man?" Both were then bound with microphone cord and rope before Steelman informed them that he and Gretzler were to abandon them, adding both should wait one hour before attempting to free themselves. Minutes later, the two returned to the creek. Steelman then partially strangled Unrein before stabbing him to death, then walked toward Gretzler to assist him in strangling and stabbing Adshade. The victims were then stripped naked before their bodies were concealed beneath bushes.
James Fulkerson and Eileen Hallock The following morning, Gretzler and Steelman visited an acquaintance of Steelman's in the town of
Clements. By October 20, Unrein's van had broken down close to
California State Route 1. Minutes later, they stopped a young couple near
Petaluma. Both were ordered to drive the two to
Santa Clara, although the driver was ordered to stop close to the town of
Marshall. The male hostage, James Fulkerson, was then bound and a gun placed against his head. In response, Fulkerson referred to his companion by name, stating: "I know I don't have much say in this, but please don't hurt Eileen, okay? Please don't hurt her." This statement unnerved Steelman, who untied the young man and dragged him to his feet, informing him he had had "every intention of blowing your fucking head off". One hour later, with the male hostage in the trunk of his car, Steelman attempted to rape Hallock, but was unable to sustain an
erection. The couple were robbed, then released in Mountain View the following morning after Gretzler and Steelman stole a brown Ford sedan from a parking lot.
Loughran Concerned both that Robbins and Mestites could ultimately link them to the disappearances of Unrein and Adshade, and aware the two teenagers they had released would soon inform police of their ordeal, Gretzler and Steelman decided to return to Phoenix. En route to Arizona, on October 21, the two picked up an 18-year-old hitchhiker named Steven Allan Loughran close to
Monterey Bay. Loughran agreed to accompany the two to Arizona, also purchasing gasoline en route. Upon their arrival at Mestites' address, Steelman was informed Renslow had returned to Denver; he also introduced Loughran as a friend from California. The five spent the evening and early hours drinking, smoking, and taking drugs. By the early hours of October 23, Steelman had become resentful of Mestites' discussions relating to topics such as
white magic,
astrology and the concept of
reincarnation. He had also begun to resent Loughran's discussion of sports-related topics. On the afternoon of October 23, Robbins drove Mestites to work at the Playful Kitten
massage parlor. In their absence, Steelman initiated a fight with Loughran, although Loughran—approximately tall and weighing 180 pounds—easily won this confrontation. In response, Steelman retrieved his shotgun and a sleeping bag, ordering the teenager out of the apartment as Gretzler followed, carrying the sleeping bag. The trio drove to a deserted gully close to the
Superstition Mountains, where Steelman ordered Loughran out of the car, to hand over his wallet and then crawl inside the sleeping bag. Steelman then shot the teenager in the head; the two then returned to the trailer. Neither Robbins or Mestites inquired as to Loughran's whereabouts.
Mestites and Robbins On the afternoon of October 24, Steelman convinced Gretzler the two should murder Robbins. This decision was partly due to fear the teenager suspected their involvement in the disappearances of Unrein and Adshade and also his subservient lifestyle with Mestites. The two devised a plan to murder the teenager while Mestites was at work later that day. According to Gretzler, "after sundown" that evening, he strangled Robbins from behind with an electrical cord as the teenager entered the living room of his apartment. The two then shot him once in the head to ensure his death, then hid his corpse beneath a mattress in his bedroom. Hours later, Steelman drove Mestites back to the trailer from her place of work, explaining he had driven Robbins "out of town for a few days". The following morning, the trio drove to a local store in Robbins' Chevrolet convertible as Mestites remarked of her relief "Ken and Bob" were "out of [her] life", and her need to "do some
coke" that afternoon prior to conducting a
reading to direct her future. Although Steelman attempted to persuade Mestites to go to work at the massage parlor that evening in order that he and Gretzler could dispose of Robbins' body, she refused. Shortly after dusk, Steelman shot Mestites once in the head from behind as she kneeled and conducted a
séance at a private altar she had constructed. Their bodies were discovered on October 28. investigators learned that two men named "Bill and Doug" had recently stayed at the trailer with the victims, having left the residence in the early hours of October 26, and that a young girl named "Marsha, from Denver" had also stayed at the trailer until approximately one week prior. One eyewitness, Monique Jered, informed police "Bill" had claimed to hail from California, whereas "Doug" had a notable
New York accent. Both had stated their intention to travel to
San Francisco. By October 31, police had determined Marsha was one Marsha Renslow; she initially refused to cooperate, but when shown
Polaroid crime scene photographs of the
bloated bodies of Robbins and Mestites, Renslow agreed to cooperate, naming "Bill" as Willie Steelman, and although not positive as to "Doug's" surname, stated his surname was possibly "Gritzler". The information provided by Renslow included details of robberies and carjackings the pair had committed and paying for motel rooms with stolen checks between October 9 and 16; this information was soon followed by the discovery of a motel receipt dated October 16 listing Gretzler's name and his address in the Bronx. This information proved sufficient to issue
warrants for the suspects' arrest on suspicion of robbery and fraud on November 1. Hours after police interviewed Renslow for the second time on November 1, Arizona investigators received a
teletype from their California counterparts informing them they had traced an abandoned green Volkswagen van linked to the October 20 kidnapping and robbery of a teenage couple to a missing Arizonian named Kenneth Unrein, adding the teenagers had named their abductors as "Bill" and "Doug". Late in the evening of November 1, Gretzler and Steelman decided to steal a car to flee the city. Shortly after they began hitchhiking close to the
University of Arizona, the two approached a
Dodge Charger driven by 19-year-old Gilbert Rodriguez Sierra as he slowed the vehicle close to a stoplight, with Steelman thanking him for stopping before stating, "We need a ride. Need a car—your car!" Sierra was then ordered into the back seat at gunpoint as Gretzler began to drive. As had been the case with the two teenagers they had held hostage at gunpoint, then released, on October 20, Steelman claimed to be a notorious
hitman on the run, having "just wasted a cop". It is unknown if Sierra believed these boasts as according to Gretzler, he simply stared blankly at Steelman, muttering a brief sentence in Spanish as opposed to English for the first time. Steelman then forced Sierra into the trunk of his car before the two returned to the Tucson apartment of Joanne McPeek and her partner, Michael Marsh, which they had left hours earlier; McPeek and Marsh were persuaded to accompany the two to purchase hard drugs, with Steelman adding, "We got a dude in the trunk, a
narc." When McPeek stated she didn't believe him, Steelman rummaged through the glove box for identification, before shouting to the rear, "Hey! Your name Gilbert?" to which Sierra replied, "Yeah!" Steelman then asked Marsh for directions to the desert, adding "I'm gonna kill this sonofabitch!" Shortly thereafter, in the presence of these individuals at a deserted canyon close to
Gates Pass, Steelman dragged Sierra from the trunk at gunpoint, forced him to hand over his T-shirt, then ordered him to his knees as he accused him of being a "pig" and a "narc". Steelman twice attempted to shoot Sierra, although on each occasion, the pistol
misfired as he had covered the firearm with Sierra's T-shirt. As Sierra desperately tried to run, Steelman removed the T-shirt and shot him once in the back, causing him to collapse to his knees and fall into an
opuntia cactus, then down a small ravine. Steelman then ran down the ravine and shot Sierra in the face and
temple at close range as Gretzler laughed. The four then returned to Tucson and purchased
amphetamines from a local drug dealer before spending the remainder of the night at a Mabel Street drug den with a teenager named Donald Scott, whom they first encountered at this address. After wiping all
fingerprints from Sierra's car the following day, Gretzler and Steelman abandoned the vehicle in a parking lot. Sierra's body was discovered approximately twelve hours after his murder. He was formally identified on November 5. although shortly thereafter, Steelman pressed a gun against his torso, ordering him to continue driving. When Armstrong began panicking, Steelman punched him before ordering him to "pull over, then" close to an intersection. Armstrong then climbed into the passenger seat of his
Pontiac Firebird as Gretzler took control of the vehicle. Moments after Gretzler took control of the vehicle, Armstrong threw himself head first from the passenger seat to the pavement—sustaining severe bruising and abrasions and shattering his glasses—as Gretzler performed a
U-turn, directing the vehicle at him. Armstrong then scrambled over a low wall and ran into the grounds of a nearby church as Gretzler sped from the scene. Outside this address, they observed a 28-year-old former
Marine captain and student teacher named Michael Sandberg washing his
Datsun car. Steelman threatened Sandberg with his gun before the pair forced him to take them to his condominium, where his 32-year-old wife, Patricia, encountered the trio as she prepared food in the kitchen. Gretzler pressed a knife to her neck as Steelman informed the couple they were to remain hostages until after dusk, after which they would be left unharmed. At Michael's request, Patricia was given
Valium to help ease her nerves. She then prepared a sandwich for Gretzler before Steelman decided the two should adjust their appearances. Gretzler then dyed his blond hair brown before Steelman shaved off his mustache and attempted to disguise a black eye he had recently received with Patricia's cosmetics. Both then changed into clean clothing from Michael's closet before Gretzler bound Patricia's arms behind her back with twine and ordered her sit on the floor of the bathroom. Michael was then forced to lie face-down on the couple's bed before his ankles and neck were bound in a manner which ensured he could not move his ankles without choking himself. Minutes later, Patricia was dragged from the bathroom to the couch where she was further bound before Gretzler walked into the bedroom and shot Michael in the head; he then shot Patricia once in the head through a cushion Steelman had placed over her skull to muffle the sound of the discharge. Steelman then fired four further rounds into her head. Noting Patricia was still alive, Steelman repeatedly
bludgeoned her about the head with a golf club until her twitching ceased.
November 4–6, 1973 Immediately after leaving the Sandberg residence, the two returned to the Mabel Street drug den they had left that morning. Only Donald Scott was still at this address; he agreed to their offer to accompany them to California. The trio drove to a nearby motel in
Stanfield, Arizona, where they spent the night of November 3-4. The following evening, they stopped overnight in another motel, again signing the register as
Michael Sandberg and again paying for their room with a forged check taken from the Sandbergs' residence. By the afternoon of November 5, the three had reached
Pine Valley, California, where Gretzler and Steelman agreed to Scott's request to discontinue riding with them, allowing him to exit the vehicle close to
Interstate 8. They then continued driving in the direction of
Victor, California, with Steelman talking increasingly frequently of robbing the owners of the downtown United Market, assuring Gretzler the owners, Walter and Joanne Parkin (with whom he had previously had a heated confrontation), were wealthy. He also explained the family resided in a rural ranch house surrounded by
vineyards, and anticipated a robbery of the Parkins' Orchard Road household and their supermarket would net the pair anything up to $20,000.
Parkin-Earl-Lang massacre By the afternoon of November 6, 1973, the pair had returned to Steelman's hometown of Lodi, where they slept at the home of an acquaintance until shortly after 5:00 p.m. before Steelman persuaded a friend named Duff Nunley to telephone his 17-year-old nephew, Gary Steelman Jr.; Nunley convinced Gary his uncle's life was in danger and persuaded him to hand Steelman his father's
Derringer handgun without his father's knowledge. The two thanked Steelman's acquaintance and nephew for the firearm, then informed them they were leaving the state. Gretzler and Steelman then drove to the United Market at closing time, expecting to find Walter Parkin alone at the premises, only to discover the building already closed; they then drove two miles toward Orchard Road. Prior to the two entering the house, Debra had phoned her father, Richard Sr., in distress; he sped to the Parkin residence, where he too was held at gunpoint as Debra again burst into tears, shouting "Oh Daddy!" Upon learning Richard Sr. had told his wife, Wanda, to contact police if he was "not back [home] in fifteen minutes", Steelman ordered Gretzler to watch the child and teenage hostages at gunpoint as he ordered Richard Sr. at gunpoint to retrieve Wanda from their home, adding he should "dust [the hostages], then get the hell out" if he, Richard Sr. and Wanda were not back at the Parkin residence in twenty minutes. Minutes later, Steelman returned to the Parkin residence with Richard Sr. and Wanda Earl. At approximately 9:25 p.m. Debra's fiancée, 20-year-old Mark Lang, arrived at the Parkin residence by prearrangement to drive Debra and her brother home. He was also taken hostage at gunpoint, and allowed to comfort his weeping girlfriend. Walter and Joanne Parkin returned to their home at approximately 10:45 p.m. All adult hostages were then forced to hand over all the money and jewelry in their possession before, at Joanne's pleading, she was allowed to put her two children to bed in the master bedroom—pleading with the two to go to sleep in order that they become oblivious to the ongoing ordeal. This robbery netted approximately $4,000 (the equivalent of about $29,200 ). The two then returned to the Parkin residence, where Walter was also bound and placed in the walk-in closet. All adult hostages were then bound together by their ankles, then gagged. Gretzler then shot and killed the two Parkin children in the master bedroom. Each was shot once between the eyes as they slept. The two then opened the walk-in closet, where the remaining seven hostages had begun desperately screaming, writhing, and
contorting. Richard Earl Sr. was then shot and wounded in the temple; Gretzler then shot Walter Parkin, Richard Earl Jr., Wanda Earl, Debra Earl, and Joanne Parkin. After reloading his gun, Gretzler then shot Mark Lang to death before Steelman fatally shot Richard Sr. before repeatedly firing into the bodies of all deceased and dying hostages inside the walk-in closet. Gretzler then consumed a slice of chocolate birthday cake and a bottle of wine found in the family kitchen as Steelman drank from a bottle of
Seagrams as he searched for further money and valuables within the residence. The two then left the Parkin household at approximately 1:20 a.m. ==Discoveries==