The Coast-to-Coast Murders by James Patterson

Michael and Megan Fitzgerald are siblings who share a troubling past. Both adopted, and now grown – Michael is a long-haul truck driver, Megan a college student majoring in psychology – they trust each other before anyone else. They’ve had to. When a young woman is found murdered in Michael’s LA apartment, he is the chief suspect and quickly arrested. But then there’s another killing that is strikingly similar. And another. And not just in LA – as the spree spreads across the country, the FBI become involved in a manhunt for a cold-blooded serial killer.