Snowbound by Blake Crouch
For Will Innis and his daughter, Devlin, the loss was catastrophic. Will's wife, Devlin's mother, vanished one night during an electrical storm on a lonely desert highway and, suspected of her death, Will took his daughter and fled. Then one night, a hard edged FBI agent appears on their doorstep and says, 'I know you're innocent, because Rachael wasn't the first...or the last'.