Never Say Die.

The peaceful existence of boat repairman Blake is destroyed when the Reverend James shows up with his disciples. Back in the days when Blake had been a member of an elite commando force, James had been his friend. But things have changed. Worried that Reverend James has fostered a cult and is planning on a mass suicide, the government sends spies to investigate. The government is also concerned because a prominent general's daughter is among the cultists. When the spies are killed, Blake is forced to reveal his true identity and join the fray to stop James and save the general's daughter.