The following DVD sets have been released by Acorn Media UK.
Elements are thrown in to variously suggest that he is mad, in a coma, or has actually travelled back in time.
Also during the first series run, Sam is informed that he is DI (Detective Inspector) to DCI Gene Hunt and the rest of the CID department in Manchester in 1973.
This revelation is something that Sam finds hard to understand; he spends most of the series working alone, against his team and Gene.
On Tuesday 27 February 2007, episode three was preempted from its planned airing on BBC One by a football match (the unplanned-for FA Cup fifth round replay between Manchester United and Reading), and the 10pm airing on BBC Four featured a repeat of the first episode of the series.