"Everyone's a murderer. You just have to meet the right person."

In the US, a prisoner on death row is seeking atonement as he faces execution. On a train in England, a journalist is looking for a story. In a quiet little village, a vicar is picking up his son's maths tutor from the station. All four are about to become entangled in a dilemma that could lead one of them to murder.

"People say they're Christians, but you know what? You never see them nailed to anything."

As Harry's dilemma worsens, the fate of his family hangs in the balance - but he's determined to do the right thing. Meanwhile, Beth Davenport meets one of Jefferson Grieff's helpers in the outside world, who delivers a chilling warning. In the cellar, Janice's desperation grows. In her battle for survival, is there anything she isn't prepared to do?