Detective David Creegan returns to work after recovering from a gunshot wound to the head. Assigned a tough female partner, he is given the job of tracking down a child abductor responsible for the disappearance of three boys.
Creegan and Branca are forced to enlist a murderer to help them solve the deaths of three women found beaten to death outside strip clubs.
Ryan teams up with a street-savvy veteran cop after his partner is killed by a well-known hoodlum.
The San Francisco team investigates the mysterious deaths of patients in intensive care, who were being treated by a doctor known to be sympathetic to mercy killing.