Fabel had already known about the case. Like all killings of their type, the two murders had all the ingredients of a good and lurid headline. The killer that the Cologne police were hunting struck only during Karneval. There had only been two victims: one the previous year, the first the year before that. But the investigating officer – Senior Commissar Benni Scholz – had recognised the modus of the killer as soon as he had arrived at the second murder scene. He had warned his superiors that another homicide could follow within the same Karneval season, fearing that the killer’s serial offending might escalate. There hadn’t been another murder, but Fabel agreed with the faceless Commissar behind the report that the killer would strike again. This year, during the coming Karneval.

Fabel laid the case files out on the coffee table. Both victims had been in their late twenties, female, single. Their backgrounds showed little commonality. Sabine Jordanski had been a hairdresser. Melissa Schenker had worked from home: some kind of software designer. Where Jordanski had been the life and soul of the party, Schenker had been quiet, reserved and almost reclusive. Jordanski had been native Kölsch, born and bred in the city; Schenker had been an outsider from Kassel who had settled in Cologne three years before. The investigation had revealed no shared friends or acquaintances. No links. Other than the way they had met their deaths.

Both women had been strangled. There was evidence of manual strangulation and then the use of a ligature: the male neckties that had been left around their throats as a signature by the killer. Scholz had explained the possible significance of this signature: Weiberfastnacht was a key date in the Cologne Karneval calendar. Always held on the last Thursday before Lent, Weiberfastnacht was Women’s Karneval Day, when women ruled. Every woman in Cologne had, on Women’s Karneval Day, the right to demand a kiss from any man. It was also a custom that women had the right, if they saw a man wearing a necktie, to cut it in half. It was intended as a symbol of overturning the traditional authority of men over women. In a more enlightened and equal cultural environment, the custom had become a bit of fun and nothing more. But Commissar Scholz expressed his belief that it meant a great deal more to the killer. He suspected that the killer was motivated either by a psychotic misogyny or a sexually motivated resentment of women. Scholz clearly felt that this view explained the post-mortem disfigurement of the bodies: approximately half a kilo of flesh had been excised from the right buttock of both victims. Fabel could see the Cologne officer’s logic, but thought it premature. He suspected that there was more to this killer than met the eye.

Fabel had lost track of time and realised he had been sitting going through the file for a couple of hours by the time Susanne came through, rubbing the sleep from her eyes.