The dream doctor (Arthur B. Reeve)

Professor Craig Kennedy is a scientist detective at Columbia University. He uses his knowledge of chemistry and psychoanalysis to solve cases, and uses exotic devices in his work such as lie detectors, gyroscopes, and portable seismographs. In this book Kennedy and Jameson (newspaper reporter) help Carton, the District Attorney, unravel a tangled web of corruption and criminal activity in their fair city. Carton is running for elections and is trying to clean up the corruption that has ruled the city, especially a few major criminals that have bonded together to keep things lucrative for themselves. One of them is running in the election too. These 3 guys find out the truth and slowly uncover and convict the criminals one żeby one.