Here's what www.netflix.com says:
Nine strangers face the mind-bender of a lifetime when a hooded madman locks them in a basement and announces that he will slay one of them every 10 minutes until they uncover the mysterious connection they all share. But starting without a single clue, can any of them solve the puzzle in less than 90 minutes? This horror-suspense film from director Chris Shadley stars Melissa Joan Hart, John Terry and Lucille Soong.
It was like Saw, but with a twist. The bad guy was around, he came in and spoke to them. I didn't think three people would be left when they figured it out. Melissa Joan Hart, she was WONDERFUL!! She was believable and she was a KILLER!! Not the one holding them captive, but still!! And the ending, it started by blowing me away. I was shocked, then when it ended, it was like, that was all?? How could it leave everything in suspense?