The gun used in the killing, and possible links with Poland. Also that more advanced DNA testing is being carried out on the murder weapon.

Episode 4 - The Gun

A behind the scenes look at the investigation into the Alistair Wilson murder, one of Scotland’s most baffling unsolved cases. Presented by Fiona Walker.

Examines the possible motive put forward by the police after 18 years for Alistair Wilson's murder. The police say new witnesses have come forward and they are investigating fresh leads.

Episode 8 - The Pub

Alistair Wilson's son, Andrew, now aged 20, speaks publicly about his father’s murder for the first time. What was said and how likely is it to unearth new leads?

Episode 7 - The Son

The police investigation and looks at theories about the murder. Summarising what we know and what we don't know about the case.

Episode 6 - The Police

The impact of the murder on the Wilson family and how the seaside town of Nairn deals with the unsolved crime.

Episode 4 - The Gun

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