The Brittas Empire 1994 S04E05

Episode: Playing with Fire. Helen has (conveniently?) booked a week in Cornwall a week before Gordon's leave, so he's even more focused on the job, notably Energy Conservation Week, producing a mountain of (5-page) forms to be filled in at every use of electric equipment. Colin builds a complete methane digestion system for human bio-waste. Gavin's fiancée Jenny turns up after five years abroad, with amnesia. His gay colleague, housemate, and partner Tim goes through hell while Mr. Brittas champions the welcome committee. When Gavin says she was in psychiatric therapy for years after her parents' traumatic accident which turned her into a pyromaniac, Laura realizes the importance of Linda's discovery that Jenny's suitcases contain fuel and lighters. Then Colin reports she's in the basement, admiring his methane experiment; she may not be angered but Gordon is there too.