One train. No stops. A deadly game of survival and revenge.

Twelve years ago, six people destroyed Anna Matheson's family. Now, she's ready for retribution, and she's laid a trap to get revenge on them all..

One train. Six passengers.

Fourteen hours with no escape until everyone's paid the price. But trapped on board as the train barrels through the night, it becomes clear Anna's not the only passenger with punishment in mind. Someone else is enacting their own form of revenge - and they won't stop until everyone else is dead.

Now, in order to destroy her enemies, Anna must save them first. Even if it means putting her own life at risk.