With a series of murders and attempted murders, Pommerenke caused fear in the
Black Forest population. He showed a certain affinity to trains, stations, and railway embankments, but without a clear
modus operandi, his actions could not be assigned to him until his arrest. Pommerenke lived in
Hornberg at the time. According to Pommerenke's later confessions, his murderous spree was triggered when he saw a film screening of
The Ten Commandments by
Cecil B. DeMille while he was at a movie theatre in
Karlsruhe during February 1959. After the presentation of the
golden calf by slightly clothed women, he concluded that all women are the root of evil and that it was his mission to punish them. That same evening, he committed the first murder in a park near the cinema. The body, which was raped and whose throat was slit, was that of 49-year-old Hilde Konter, found on 26 February 1959, at the motorway junction in
Durlach. In March 1959, Pommerenke abused 18-year-old Karin Wälde in a wooden hut on the outskirts of Hornberg, killing the young woman with a stone and throwing her body across the river embankment at the nearby railway embankment; her body was discovered on 25 March 1959, on the banks of the
Gutach. On 30 May 1959, in
Singen, Pommerenke assaulted an 18-year-old store clerk in her parents' house and attempted to strangle her; however, the victim was able to free herself and call for help, whereupon Pommerenke fled. The woman was able to give the police the following day an exact description of the person, but he was not associated with the previous two murders. On 31 May 1959, shortly before midnight at the
main railway station in
Heidelberg, Pommerenke boarded the tourist special train D 969 to
Finale Ligure on the
Italian Riviera. In the train, he murdered 21-year-old Dagmar Klimek with a knife stab to the chest, threw her body on the
Rhine Valley Railway towards
Basel just behind
Freiburg im Breisgau near the
Ebringen breakpoint from the train, then pressed the
emergency brake, so that the train three kilometres further south of
Schallstadt could come to a standstill. Pommerenke got out of his bed, returned to the corpse, and dragged it to a nearby dirt road, where he committed sexual acts on it. Dagmar Klimek was reported missing by her friends the following day when the train reached the Swiss
Bellinzona; a connection with the emergency brake at Schallstadt, in which two witnesses saw a figure climbing out of the train, was not made. On 5 June 1959, Klimek's body was found at the embankment near Ebringen; the forensic examination revealed that the cause of death was a stab wound, while the other injuries, as a result of the fall from the train, were non-fatal. The investigations of the Freiburg police initially came to nothing, also because the rail car in question, which was transferred to Freiburg for examination after a few days with the help of the
Federal Criminal Police Office, had been cleaned several times, so that no usable traces could be detected. There was no evidence from the survey carried out of co-travellers at their holiday destinations in
Italy. On 2 June, before the Klimek murder became known, Pommerenke attacked a 25-year-old waitress near the
Triberg im Schwarzwald train station, attacking her with an ironbound wood and stealing her purse. On 6 June, while cycling around in Karlsruhe, Pommerenke injured two women severely by stabbing them in their necks. On 8 June, Pommerenke broke into the room of a 15-year-old girl through an open window and severely injured her by stabbing her in the neck, but was chased away by her father, who had come to her aid. The police were able to secure a sole imprint of the offender at the scene. On 9 June, Pommerenke raped and strangled 16-year-old Rita Walterspacher near
Baden-Baden, dumping her body in a nearby wooded area where she was found the following day. Again, the investigators lacked any leads. On 10 June, Pommerenke stole a small-caliber rifle and an air-pressure pistol during a break-in in a weapons shop in Baden-Baden. With this pistol, he invaded on 18 June a ticket office at Durlach station, seizing 540
Deutsche Mark and escaping unrecognized. On the same day, he picked up a suit from a tailor in Hornberg, ordering it under his name. He next left his worn-out clothes and a package behind, which was the small-caliber rifle that he wanted to use in a few days. A footprint was found at the scene in Durlach station, which corresponded to the track secured on 8 June and the description provided to police with the first evidence of a connection between the burglary and the murders. On 19 June, a man named Schneider from Hornberg reported that he had found a small-calibre rifle and provided personal data of the perpetrator; the same day, Pommerenke was recognised in Hornberg and was arrested on the station's forecourt. ==Confession and conviction==