In the closing scenes when Simone is on her yacht which is supposed to be in Oban, Scotland, visible in the background is a green train, a DART: Dublin Area Rapid Transport; the scene was shot in Dun Laoire, Dublin, Ireland.
The 'G' plate Rover 600 series police car in which PC Rae arrives in episode 1 to tell Malcolm that the investigation of his wife's death is being scaled down, was only manufactured in Britain from 1993 to 1999, yet the G plate registration was for cars registered 1989/1990.