1/8 Sam encounters the young incarnation of Tony Crane, a nasty villain he put away in 2006.
8/8 Sam is finally starting to accept life in 1973, until he meets his 29-year-old dad.
7/8 The death of a drug dealer in custody pits Sam against CID.
6/8 Sam faces life-and-death deadlines in both the past and the present.
5/8 A football fan's murder results in a clash of methods between Sam and Gene.
4/8 Sam discovers corruption in CID when he takes on a local crime boss.
3/8 Sam responds to a stabbing at the converted mill where he lives in 2006.
2/8 Sam's faith in the criminal justice system brings him head to head with Gene Hunt.