 In the latter 1960s Stewart McMillan, a Navy veteran and attorney, is named commissioner of the SFPD. In this capacity he becomes involved, to a degree unusual for police commissioners, in a series of criminal investigations, frequently aided by his wife Sally, a mystery buff who is well-meaning but frequently of an inferior mind but nonetheless is able to prove herself. Also assisting Commissioner McMillan are his partner, Sgt. Charles Enright, a loyal if somewhat ineffectual officer who worked for a private detective agency and thus gained the experience needed to join the force, and McMillan s tart-tongued housekeeper.