Larry Kent: Mourning Glory (Book #656‪)‬

It started with the name ‘Emanuel Kadaver’ and a New York address … both of which were written on one side of a five-hundred dollar bill. Intrigued, Larry Kent went along discover just what his mysterious benefactor wanted. Next thing he knew he was stranded fifteen hundred miles from home with two whole days missing from his memory.
Who had dumped him on a lonely, humid island in the middle of the Louisiana swamplands? Aside from Kadaver, there were only two other suspects—a tawny-haired swamp girl named Becky, who longed to become a woman, and the mysterious Miss Baines, whose gloomy, run-down mansion was patrolled by dogs who had been trained not just to defend, but to kill.
Only one thing was for sure—if Larry didn’t clear himself of the neatest frame-up he’d ever encountered, he had an appointment with the electric chair …