The only other recurring characters (aside from the main characters) was Aidan Miles, played by Adrian Dunbar, and Sally Goodman, played by Morven Christie Aidan was a possible love interest for Catherine, before being exposed as a murderer by Richard.
The only other recurring character (aside from the main characters) was Aidan Miles, played by Adrian Dunbar. Adrian was a possible love interest for Catherine, before being exposed as a murderer by Richard.