In Sanctum, which came out on DVD just last week, 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 Hurley - are forced to radically alter plans. With dwindling supplies, the crew must navigate an underwater labyrinth to make it out. Soon, they are confronted with the unavoidable question: Can they survive, or will they be trapped forever?

We have 5 copies of the DVD to give away, courtesy of Universal Studios Home Entertainment, and we thought this might be a good opportunity to revive our would-be classic "Spot the Difference" game to help determine our winners.

Kind of an easy one, admittedly, but if you can spot the two differences between these two photos, then your entry qualifies! (Click here for full rules, regulations, and eligibility.)

Send your entry to webmaster@showcase.ca (with "SANCTUM CONTEST" in the subject header) -- we'll contact the winners by June 20 at 5pm EST.