The Green Hornet (1966)

S1E5 The Frog is a Deadly Weapon

Private Investigator Nat Pyle reveals to Brit that he has evidence suggesting that the supposedly deceased mobster Glen Connors is still alive. Soon after, Nat's body is discovered floating in the harbor, likely the victim of a boating mishap. However, the Green Hornet suspects foul play and takes a personal interest in the case, particularly since Glen Connors was responsible for framing the Green Hornet’s true father.