The Six Million Dollar Man (1974) : 1x7

By sheer chance, Steve Austin witnesses the attempted assassination of Lawrence Sandusky, a prosecutor who is about to file criminal charges against a known racketeer. He is unable to capture the assassin, but does catch a glimpse of his face. OSI is assigned to security detail for the prosecutor pending a 9:00 a.m. court hearing. Steve Austin identifies and apprehends a man named John Hopper, believing him to be the hired hitman. However, Hopper has a seemingly ironclad alibi. Convinced that he is correct, Steve Austin trails the released suspect as the court hearing fast approaches.