Former Hill Street Blues Stars Daniel J. Travanti will appear on an episode of Criminal Minds next season. The Emmy winner will take on the role of a serial killer named Mr. Mullens, TV Guide ...

James Sikking, 'Hill Street Blues' and 'Doogie Howser' actor, dies at 90 On the acclaimed NBC police drama, Sikking played Lt. Howard Hunter, uptight head of the Emergency Action Team.