Sean Connery

as John Patrick Mason

Nicolas Cage

as Dr. Stanley Goodspeed

Ed Harris

as Brigadier General Francis X. Hummel, USMC

John Spencer

as FBI Director James Womack

David Morse

as Major Tom Baxter

William Forsythe

as Special Agent Ernest Paxton

Michael Biehn

as Commander Charles Anderson

Vanessa Marcil

as Carla Pestalozzi