The scene where the body is found was filmed in St Cuthbert's Cave, near Belford, Northumberland.
When Vera wakes up on the sofa in her office, she checks a report. The date on the report is June 2016, which was after the episode was first broadcast on British TV on 7 February 2016.
Nisa Cole (Mia Haleford), Jason Done (Philip) & Ben-Ryan Davies (Harris) also worked together on Waterloo Road (2006) as Amy Porter, Tom Clarkson & Ronan Burley respectively.
Rakie Ayola (Amber) and Sean Gilder (Bobby) both appeared in Midsomer Murders Series 17 Ep. 3 The Ballad of Midsomer County.