Chris Barrie took a crash-course in fencing to portray the "Rimmer musketeers", and attended the gym frequently for months before for his chained-up half-nude scenes.
Starbug is seen moving on its caterpillar tracks for the first time in this episode. In earlier episodes, Blue Midget had this feature, but Starbug seems more suitable for moving through swampy environments.
According to the DVD commentary, Cat's yellow-and-black coat is the same as the black-and-white one seen in Camille (1991), with the white portion simply coloured yellow with markers.
Craig Charles was not in the good books when, as the cast were filming in the canoe across the fiery swamp, Charles leaned over to light a cigarette on one of the flames, causing much angry shouting from the crew on the shore. Lighting director John Pomphrey (affectionately nicknamed "The Prince of Darkness" on-set) unfortunately overestimated the edge of dry land and fell into the lake - followed by two electricians and a quantity of gear. After this, Pomphrey would find a life-jacket bearing his name waiting for him on the side of the generator.