As One Door Closes is an episode of the BBC sit-com, Only Fools and Horses. It was the final episode of series 4 and first broadcast on 4 April 1985.
's latest get-rich-quick scheme involves super-sharp combs and louvre doors funded by Denzil
's £2,000 redundancy money. But unfortunately, Brendan O' Shaughnessy and Teddy Cummings don't want the louvre doors, which lands Del in hot water with Denzil, who's demanding his money back.
Rodney reads an article about a rare butterfly, and a butterfly collector's desire to catch it and pay a large sum of money to whoever brings it to him. Later, while on the run from Denzil's angry brothers, they see the butterfly in the local cemetery. Rodney eventually captures it in the lake of the nearby park.
He hands it to Del Boy, but Denzil, after hearing that Del has got him his money back, skates by and gives Del a high five, crushing the butterfly - much to the annoyance of Rodney.
The idea for the script was based on a true article of a rare butterfly that John Sullivan
had read about.
- When the Trotters are in the cemetery, Del says that Grandad is in the garden of "external peace" which surely means he was cremated, yet in "Strained Relations", Grandad had been buried.
- At the scene when the Trotters visit their mother Joan's gravestone, the bench is several footsteps away and the ground directly behind the bench is clear, yet in "The Yellow Peril" when Del and Rodney visit Joan's grave, the bench is one step away from the elaborate gravestone, and also directly behind the bench are other gravestones, clearly a different cemetery.
- In the scene when Rodney finds out that the doors are hookey, Del says Tommy Cummings chucked them out the window, but in the first scene Rodney calls him Teddy Cummings.