Blythington's Game (The Raventon Mysteries)

Taylor Smart and her two friends, Bobbie Leigh Harwell and Pilfree Romulus Bojo accept a mysterious offer to play a game of a series of challenges they at first believe is no more than a prank. The game soon takes on a completely different countenance whereby failure to comply with the letter of each challenge's unique rules is not an option. Once committed to playing the game, the three friends cannot abandon the game. Each challenge of the game requires complete focus and teamwork, each participant utilizing one another's strengths while adapting for weaknesses. The price for failure is, well ... their lives.