D.I. Frost says that he hates machines because he was once attacked by a lawnmower. In reality, the actor who plays Frost, David Jason, once almost lost a toe when a lawnmower sliced the end of his shoe off.
Neil Dudgeon (PC Costello) and Barry Jackson (Walter Peters) would both work together on 2 series of Midsomer Murders.
Frost's preferred beers for home drinking (as shown when he spends the evening with DC Costello) are McEwan's and Flowers's Bitter.
Final appearance of P.C. Keith Stringer.