Murdoch has been wrongfully imprisoned for the murder of a burlesque dancer found is his bed, Julia has been kidnapped, Brackenreid is missing, Constables Jackson and Crabtree have ostensibly been killed and Station House Four has fallen under the thumb of corrupt city councilor Franklin Williams, whom the council president manipulates after reinstating Davis as Chief Constable and appointing civilian Penelope Marsh to manage station four, where all officers are suspended with pay, only recording cases to be referred to other stations, the informal task being to get Murdoch convicted. First from jail, then released on house arrest after promising to confess once he's certain Julia will be all right, Murdoch and his remaining allies, falsely assumed dead or fled, work underground as to set things right gathering proof against the real criminals, with a surprising turncoat ally.