As Guy (Gael García Bernal) and Prisca (Vicky Krieps) treated their three young kids to a tropical vacation, they opted for a day enjoying a beautiful seaside cove. However, they and the beach's other occupants would discover to their horror that they were aging a year every half hour-and that there was no escape back. M. Night Shyamalan's chilling adaptation of the graphic novel "Sandcastle" co-stars Rufus Sewell, Ken Leung, Nikki Amura-Bird, Alex Wolff, Embeth Davidtz. 108 min. Widescreen; Soundtrack: English. Two-disc set.