S1·E19 Who Killed April?

Tim's mother is in town for a visit and provides several vital clues that solve the murder of April Adams. Tracking the victim to a carhop-style restaurant, Burke narrows the suspects to April's erratic brother, her cousin, her psychiatrist, the drive-in restaurant's manager, and a hockey star and his wife. Empty sugar packets from the drive-in and several bankbooks provide Burke with the link to a drug deal.