Gotham Central Book 4: Corrigan

Witness the gritty side of the Gotham City Police Department from their perspective, as teens dressed as Robin the Boy Wonder start turning up dead.
In this final hardcover collection of GOTHAM CENTRAL, the dead body of Robin the Boy Wonder is found on the streets. Now the detectives of Gotham Central must try to solve the mystery of his death while dealing with his associates, Batman and the Teen Titans.