Tom Palmer is a wanted man. He's spent years on the wrong side of the law, staying one step ahead of the marshals. The Southwest is littered with his wanted posters. But Tom is ready to change his life. His last bank robbery ended disastrously, with all his partners killed. He buries them, along with his old life, and rides north. Along the way he stumbles across a horrific sight - a massacred wagon train. It's a tragic discovery, but one of the victims may hold the answers to Tom's future. According to a letter found near the man's body, he's Abraham Cassidy, on his way to the town of Integrity, South Dakota, to take over as the local lawman. It's the perfect opportunity to start a new life; so Tom switches identities with the dead man. But Integrity isn't the quiet small town he expected. Buildings are going up and people are pouring in. It's a tough place to keep a secret, especially for someone whose life depends on it - like the new marshal.