E. W. Hornung 
The Crime Doctor [EPUB ebook] 

Author E. W. Hornung is perhaps best remembered for creating the unforgettably raffish criminal mastermind, Raffles. In the novel The Crime Doctor, Hornung flips the script and takes a hard look at crime from the other side of the equation. Doctor John Dollar is a learned scholar and practitioner who becomes obsessed with the idea of preventing criminal behavior before it takes hold—and he's willing to take extreme measures to fulfill his objective.