The Rookies (1972)

S1E7 The Bear That Didn't Get Up

Danko and his team are tasked with safeguarding a crucial witness, which means they must be vigilant about who comes to the prison. When a hitman poses as a professor wanting to interview Sol, the witness, Danko refuses his request. However, he reluctantly decides to assist the 'professor' by heading with him to an aircraft hangar, where the man claims he has a friend waiting.