A friend of Natalie's ex-husband seemingly commits suicide aboard a locked cabin on a submarine. Monk agrees to investigate, despite his phobia about being on--and beneath--the water.
Quest roles:
Hector Elizondo(Dr. Neven Bell), William Atherton(Commander Nathan Whitaker), Scott MacDonald(Chief of Boat), Casper Van Dien(Lt. Steven Albright), La Monde Byrd(Petty Officer Wedoes), Rob Evors(Petty Officer Kramer), Pepper Sweeney(Navy Cook), David A. Jansen(Lt. Jason Pierce (uncredited)), Dan McNeill(Passing Sailor #1), Tom Nagel(Passing Sailor #2)