Stephen Samuel Kahan (August 6, 1939 – August 4, 2019) was an American character actor, best known for playing Captain Ed Murphy in the Lethal Weapon film series. He has appeared in fourteen films directed by his cousin Richard Donner: Superman (1978), Inside Moves (1980), The Toy (1982), Lethal Weapon (1987), Scrooged (1988), Lethal Weapon 2 (1989), Radio Flyer (1992), Lethal Weapon 3 (1992), Maverick (1994), Assassins (1995), Conspiracy Theory (1997), Lethal Weapon 4 (1998), Timeline (2003) and 16 Blocks (2006).

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Steve Kahan was an American character actor recognized for his extensive body of work in major studio films and frequent collaborations with director Richard Donner.
He is best known for portraying Captain Ed Murphy across the Lethal Weapon film series.
He appeared in fourteen films directed by his cousin Richard Donner, ranging from Superman to Maverick.