Investigating Agatha Christie's Poirot: Florin Court - Poirot's 'Whitehaven Mansions'
I'm also a huge fan but I've noticed that there seems to be loads of locations reused in the series. For instance the stairs of the hotel in the underdog is the same I think as the ones in evil under the sun but can't find anything on line to collaborate this. It seems to happen so much I'm surprised they get away with it. Not complaining but after watching them all at least 20 times each you begin to spot similarities.