A tough New York City cop has to team up with a capricious Hollywood action movie star training for his upcoming role in a film while at the same time going after a murderer. Adventure starring Michael J. Fox, James Woods, Penny Marshall, Stephen Lang and Annabella Sciorra. (Alter-23.30)

San Francisco is at risk when a group of renegade marines take over the prison island of Alcatraz with 81 tourists as hostages and threaten to release nerve gas into the city unless their demands are met. Adventure with Sean Connery, Nicolas Cage, Ed Harris, David Morse, William Forsythe and John Spencer. (Mega. 21.00)