Hold Tight by Harlan Coben

Parents Tia and Mike Baye have no idea what they're getting themselves into when they have a spy program installed on their teenage son Adam's computer. Adam has been acting distant lately, especially since the suicide of one of his best friends, Spencer. When they find an e-mail that says that Adam is going to a dangerous party, Mike and Tia feel like they have to step in and prevent him from going. Their intervention causes Adam to go missing and Mike makes it his mission to find his son. In addition, a heartless killer named Nash is going on a spree. How Coben is able to weave a story together of what, at first, seem like several unrelated events is what makes him one of the best thriller writers today. I always find myself devouring his books, looking for clues on where the novel might be going. Hold Tight is another great read, with sympathetic characters and a story that makes you want to keep turning the pages.