Sanctum (2011)

Cast: Richard Roxburgh, Ioan Gruffudd, Rhys Wakefield, Alice Parkinson, Dan Wyllie, Christopher James Baker, Nicole Downes, Allison Cratchley, Cramer Cain, Andrew Hansen

Master diver Frank McGuire has explored the South Pacific's Esa-ala Caves for months. But when his exit is cut off in a flash flood, Frank's team—including 17-year-old son Josh and financier Carl Hur…