Big Apple Murders - Jim Richards Murder Novels, #28

An invitation to speak at a big book convention in New York City entices Jim to cross the country and appear. He and Penny, along with Buck, travel to the Big Apple and they fall into a murder of one of the authors promoting his books. It's not the only murder, Jim's curse seems to be working over-time and there is a second author murdered. Jim is pulled into the crimes along with an old acquaintance from his last trip to the city, Captain Lou Brege, and finds more than what he expected.
Are the murders being committed by a serial killer called the Hangman? Or are the murders being set-up by Jim's own publisher? Jim, along with Buck and a mob wise-guy hunt down killer as Penny backs them up with her handy .38 Smith & Wesson. The police and the mob join forces to bring justice to the convention before Jim gives his speech, but will the killer get to Jim before he can perform?