David Tennant as Harry Watling, an English vicar forced (or, so he says) into a difficult situation. Stanley Tucci as Jefferson Grieff, a former criminology professor on death row in an Arizona prison. Dolly Wells as Janice Fife, a mathematics tutor and righteous do-gooder who misinterprets a shocking secret.
"In a quiet little village, a vicar (Tennant) is picking up his son’s maths tutor (Wells) from the station. "In the US, a prisoner on death row (Tucci) is seeking atonement as he faces execution. All four are about to be entangled in a dilemma that could lead one of them to murder..."