Sophie Stanton plays Brenda Buckley in this episode. She returns in episode 14.4, The Oblong Murders (2011), in the role of Josie Palmer.
Paul Chapman plays Reg Buckley in this episode. He returns in episode 12.7, The Great and the Good (2009), in the role of Howard Richardson.
Tessa Peake-Jones plays Sarah Lawton in this episode. She returns in episode 18.3, Breaking the Chain (2016), in the role of Mary Appleton.
Roger Allam plays a shady character with economic problems, suspected of foul play by DCI Barnaby. 15 years later he gets himself to play a Detective chief inspector, DCI Fred Thursday in the series Endeavour (2012).