Bombay in India; now called through politics Mumbai; was a wonderful place in 1930's. A busy commercial and bustling housing area for millions of people, where anything including policemen and the judiciary could be bought and sold daily in India; just like today.
Superintendent Grant was an honest guy who refused to join the endemically corrupt and criminal to the core British Police; so he joined The Indian Police Force to be useful in being an honest figurehead to a corrupt police force.
Suddenly young 16 year old girls are being murdered coming home from work in the evenings by seemingly a dedicated clever serial killer. Can he be caught or as in America and Europe, will this insane person build up a score of 100 dead girls , or 200 or maybe even more with him being uncaught?
The Bombay Police and even The British Armed Forces come out in mass onto the railway stations, to try to catch this dedicated maniac.
Gradually the clues build up and the Police get their break from "the good angels", the killer bites a dead girl's neck; so they maybe can catch him with some very hard work.
After reconstructing most of the dentists office records in this amazing town of incompetence and crime; they have their man. Meanwhile the Superintendent travels to Spain and a whole new scenario is exposed. The Third Reich Ambassador invites the Superintendent to Berlin to set up a new forensics service for The Third Reich, once the killer is caught.
The serial killer is caught and is spared the death penalty, due to diplomatic pressure from his home country.
However the world war gets close; and the Bombay Police get stabbed in the back by diplomatic pressures; and The British Superintendent is knighted and posted from Bombay India to Berlin in The Third Reich to set up a new forensics service; and was he also an agent now for British Intelligence living in the heart of Nazi Leaders.