Adam-12 - Season 4 - Eps 21: Back-Up One L-20
Malloy tries to prove Sgt. MacDonald's innocence when Mac accidentally hits and kills a jaywalker while driving his police cruiser. Every witness on the sidewalk claims she was in the crosswalk, and the burglary suspect MacDonald is transporting is unmotivated to testify on his behalf. The truth proves to be far more complicated than the officers realized.
About Adam-12

Title: Adam-12
First Air Date: 1968-09-21
Last Air Date: 1975-05-20
Status: Ended
Rating: 7.1/10 (from 39 votes)
Language: EN
Seasons: 7
Total Episodes: 174
Network: NBC
Genres: Crime, Drama
Production Companies: Mark VII Ltd., Universal Television Entertainment
Synopsis
Adam-12 is a television police drama that followed two police officers of the Los Angeles Police Department, Pete Malloy and Jim Reed, as they patrolled the streets of Los Angeles in their patrol unit, 1-Adam-12.
Cast

Martin Milner
Officer Pete Malloy

Kent McCord
Officer Jim Reed

William Boyett
Sergeant MacDonald