Crash into Me — Albert Borris

Owen, Frank, Audrey, and Jin-Ae have one thing in common: they all want to die. When they meet online after each attempts suicide and fails, the four teens make a deadly pact: they will escape together on a summer road trip to visit the sites of celebrity suicides...and at their final destination, they will all end their lives. As they drive cross-country, bonding over their dark impulses, sharing their deepest secrets and desires, living it up, hooking up, and becoming true friends, each must decide whether life is worth living--or if there's no turning back.