Seasons & episodes
S4 · E1Downshift to Danger 1974-09-29
The grand prize of the 20th Annual Golden State Rally in Monterey is an antique car collection willed by a late millionaire. Mischief develops into mishaps and worse, until an entrant is killed.
S4 · E2The Game of Survival 1974-10-20
A temperamental tennis champion is suspected of murdering a newspaper magnate who had him suspended.
S4 · E3Buried Alive 1974-11-10
A WWII intelligence colleague, long since thought to be dead, turns up and is murdered.
S4 · E4Guilt by Association 1974-12-08
Mildred is accosted while serving on a sequestered jury, then another juror is murdered in his locked room.
S4 · E5Night Train to L.A. 1975-01-19
Mac heads south to a police convention on a train filled with officers, Mildred, and the author of Cops and Other Crooks, who is murdered en route.
S4 · E6Love, Honor and Swindle 1975-02-16
It seems that Mac's sister is engaged to a con man out to diddle a mining company.