What Happened to the Bennetts by Lisa Scottoline

The Bennett family suffers an horrible tragedy when their teenage daughter, Allison, is killed during a carjacking that occurs when they are coming home from one of  Allison's field hockey games. Jason, his wife Lucinda, and their thirteen-year-old son, Ethan, are then put in the witness protection program because the culprits are part of a criminal organization. The whole family is reluctant about joining the program because it means giving up the lives and friendships they have built, as well as not being able to attend Allison's funeral. Emotional, and with a lot of time on his hands, Jason discovers that everything that they've been told about their situation is not correct. Angry, he takes matters into his own hands to find out the truth and to get justice for Allison.