Death In The Tiergarten by Benjamin Carter Hett
 

Death in the Tiergarten: Murder and Criminal Justice in the Kaiser’s Berlin (2004)

A nightwatchman is murdered on the steps of a church . . . a beautiful young woman shoots her boyfriend in the Tiergarten park . . . a con-man dons a captain’s uniform and hijacks a squad of soldiers . . . the police fight back with new tools, like fingerprints and blood chemistry, while defense attorneys ostentatiously drink champagne in the courtroom. It’s Berlin in the years before World War I, a society obsessed with crime and scandal as it rushes headlong into the brutal twentieth century.

Using stories about love, lust, betrayal, and honor, Benjamin Hett pries open Berlin’s public life in brilliant, unexpected ways.
— Peter Fritzsche, author of Hitler’s First Hundred Days