Season 4

1. Downshift to Danger

1974-09-29 · 90m

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.

2. The Game of Survival

1974-10-20 · 90m

A temperamental tennis champion is suspected of murdering a newspaper magnate who had him suspended.

3. Buried Alive

1974-11-10 · 90m

A WWII intelligence colleague, long since thought to be dead, turns up and is murdered.

4. Guilt by Association

1974-12-08 · 90m

Mildred is accosted while serving on a sequestered jury, then another juror is murdered in his locked room.

5. Night Train to L.A.

1975-01-19 · 90m

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.

6. Love, Honor and Swindle

1975-02-16 · 90m

It seems that Mac's sister is engaged to a con man out to diddle a mining company.