The Third Deadly Sin By Lawrence Sanders

1986 Paperback

Berkeley books

Very good

Novel

The Third Deadly Sin is a 1981 suspense novel by Lawrence Sanders featuring retired police detective Edward X. Delaney, who hunts a female serial killer dubbed the "Hotel Ripper" in Manhattan. The killer, disguised as an unassuming secretary by day, preys on men in hotel bars at night, using a Swiss Army knife to murder them, while Delaney races to catch her before she strikes again. The book is known for its psychological suspense, detailed police procedural, and its portrayal of a rare female serial killer for its time