I really enjoyed this novel about a few sixteen year olds trying to find out what happened to a fellow student who disappeared. There's a side story that runs parallel about the disappearance of Digby's sister, but clearly (hopefully) it's a setup for the next book in a series. 
 I found the characters to be surprisingly likable and was rooting on Digby and Zoe. Sure, I don't know anyone that thinks or talks like Digby. He's extremely smart and seemingly knows what's going on anywhere at anytime. But honestly, it's a story. Suspend a little belief and just enjoy the snarky banter between the group. 
 If there were to be another story in this series, I would definitely read it.