Atonement

When Billy McCree is found dead in his workshop with his severed hand by his side, recently-released prisoner Jim Naysmith is the prime suspect for his murder - as the dead man's testimony had put Naysmith behind bars twenty years before. While Burke and Reid investigate another member of Naysmith's gang, Ross is flattered when law student Mary Cullen asks to shadow him, but Gemma becomes suspicious of Mary's motives.