Troubled by historical DNA evidence results, Jimmy has to face the fact that Duncan may have been involved in Lizzie Kilmuir's murder, and potentially Sally McColl's as well. A shocked Duncan is brought to the station for questioning, hurt that Perez would even think him capable of murder. However, the detective knows Duncan's lying - perhaps not about the murder, but about something else significant. So when Duncan finally admits he had an affair with Donna, it's not long before a bombshell is dropped. false 2026-01-17 04:20:50 Episode 6 Rebecca Gatward David Kane David Kane 7.2 2018 TV-14 tt6914764 6538914 58 Crime Drama Mystery /config/metadata/library/9b/9b325713392baaa53dfdb984bb490f13/poster.jpg false 2 true 2026-01-22 17:42:33 0 3484.547 Shetland 6 4 2018-03-20 DVDSUB DVDSUB 720 480 eng progressive True False