Adam-12 Good cop show for It's time. Adam-12 cast Martin Milner .... Officer Peter Joseph 'Pete' Malloy Kent McCord .... Officer James A. 'Jim' Reed rest of cast listed alphabetically William Boyett .... Sergeant MacDonald Shaaron Claridge .... Dispatcher Gary Crosby (I) .... Officer Ed Wells William Elliott (II) .... Officer Grant (1973-1975) Kristin Harmon .... Mrs. Jean Reed (1974-1975) Jack Hogan (I) .... Sergeant Miller (1968-1969) Mikki Jamison .... Mrs. Jean Reed (1969-1970) Claude Johnson .... Officer Brinkman (1968-69, 1974-75)/Officer Norm Green (1969-71) William Stevens (III) .... Officer Jerry Walters (1968-1969) Fred Stromsoe .... Officer Jerry Woods (1972-1975)