She is sure that Carl, a long been suspected serial killer who was never convicted, killed her sister. Now he is facing old age and it's time to find out the truth during a road trip across Texas.

Carl Louis Feldman is an old man who once took photographs. That was before he was tried for murder and acquitted. Before dementia and his admission to a Texas care facility. Now his daughter has come to see him, to take him on a trip.

Only she's not his daughter, and, if she has her way, he's not coming back...

Because Carl's past has finally caught with him. The woman driving the car is convinced he's guilty, and that he's killed other young women. Including her sister Rachel.

Now they're driving across Texas, following his photographs, his clues, his crimes. To see if he remembers any of it. To discover what happened to Rachel.

Has Carl truly forgotten what he did or is he just pretending? Perhaps he's guilty of nothing and she's the liar. Either way, in driving him into the Texan badlands she's taking a terrible risk.

For if Carl really is a serial killer, she's alone in the most dangerous place of all...