"Crystal Donavan gets a message on a mysterious app with a video of her little sister gagged and bound. She has only 24 hours to play--and win--the kidnapper's game. At first the tasks are bizarre: steal a test and stuff it in a locker, bake brownies, make a prank call. Soon Crystal realizes each task is meant to hurt--and kill--her friends. But if she refuses to play, the kidnapper will kill her sister. Making impossible choices between her friends and her sister, Crystal must uncover the truth and find a way to outplay the kidnapper... before it's too late.." - Publisher.

Purchased by PSS.