Smith was paroled from prison in October 1976 after having served a little more than four years incarceration after having pleaded guilty to first-degree attempted rape. A little more than a month after Smith's release, on November 24, 1976, the day before Thanksgiving, Robert Hedderman, 48, and Hedderman's secretary, Margaret Byron, 59, were found brutally murdered in the back of Hedderman's religious store in
Albany. Human feces was found on evidence nearby, which later proved valuable. Smith was free and employed nearby and hair and blood evidence made him a main suspect. On December 23, 1976, while Albany police were investigating the double murder, Joan Richburg, 24, was raped, murdered and mutilated in her car at Colonie Center mall in
Colonie. The pattern of brutality and more hair evidence made Smith the prime suspect in that murder as well, but he remained free pending investigation. Barely two weeks later, on January 10, 1977, a large man tried to lure a 22-year-old woman out of a gift shop in Albany. When she resisted, he took her 60-year-old grandmother hostage and threatened to kill her. When help arrived, he threw the woman down, knocking her unconscious and deliberately stepped on her hand, breaking it. Years later the grandmother saw a picture of Smith in the newspaper and identified him as having been her attacker. With the three murder investigations stalled, on July 22, 1977, Maralie Wilson, 30, was found strangled and mutilated near train tracks in downtown Schenectady, New York. The horrendous post-mortem mutilation was worse than some veteran investigators had ever seen in the region. Smith was known to frequent the area and witnesses recalled Wilson being accosted by a large man. Schenectady police made Smith the prime suspect in her murder. On August 19, 1977, Marianne Maggio, 18, who worked in the same area as Wilson, was kidnapped and raped by Smith. When he forced her to drive towards Albany afterwards, police stopped the car and arrested Smith without incident. ==Experiment and confessions==