Detective Sergeant Harbinder Kaur sees nothing out of the ordinary in the death of a ninety-year-old woman with a heart condition. But the woman's caretaker, Natalka, had a reason to be at the police station: while clearing out Peggy Smith's flat, she noticed an unusual number of crime novels, all dedicated to Peggy and with the postscript: PS: for PS. When a gunman breaks into the flat to steal a book and its author is found dead shortly thereafter, Detective Kaur begins to think that perhaps there is no such thing as an unsuspicious death after all. Kaur must reckon with how exactly authors can think up such realistic crimes...