Double Cross — Norah McClintock

"In this chilling sequel to Over the Edge, guts and determination help Chloe and her friend Jonah prove that his imprisoned father wasn''t the one who murdered his mother. Chloe''s first meeting with Jonah turns into an insult-slinging match, but after she gets to know why he has such a chip on his shoulder, she''s obsessed with finding out who really did kill Jonah''s mother. She digs for information by asking people: ""Where were you the day Mary Shackleton was murdered?"" in order to eke out clues that ultimately help her finger the real murderer."