An American senator visits death row to get advice from former criminology professor-now-convicted murderer Jefferson Grieff (Stanley Tucci). Meanwhile, in England, charming local vicar Harry Watling (David Tennant, Doctor Who) is keeping busy with his flock, but when a troubled parishioner pleads with Watling to hide his hard drive from a prying mother, life begins to unravel. A series of misunderstandings leads to a math tutor (Dolly Wells) being locked in a basement and the potential for further crimes. Journalist Beth Davenport (Lydia West) ties these two worlds together.