Plot hole: When Kalgan is torturing Lea, he says that he wants her father's countermeasures in case of emergency. But when she is rescued and finds out MacPhearson is a traitor who is working for Kalgan, Captain Devers is worried because MacPhearson knows all of the ship's countermeasures. If MacPhearson knows the countermeasures, then Kalgon does too, so there is no reason to bring it up while he is torturing Lea.
Space Mutiny (1988)
Ending / spoiler
Directed by: David Winters, Neal Sundstrom
Starring: John Phillip Law, Cameron Mitchell, Reb Brown, James Ryan
Lea and Ryder stop Kalgan from taking over the ship. Ryder rams a car into Kalgan as he's trying to escape and both cars explode. The final scene shows that Kalgan survived the explosion...
Alex
More mistakes in Space Mutiny
Kalgan: I'm being undermined by my own disciples.