It's the end of an era tonight. Millions across the country will sit down to watch ITV as the curtain comes down on Agatha Christie's world famous detective, Poirot.
After 25 years in the character, David Suchet will no longer be using his little grey cells or waxing that famous moustache.
The final episode is appropriately called 'Curtain' and the man behind Poirot has been speaking to Simon Parkin.
Click below to watch David's chat with Simon Parkin
You can watch 'Curtain: Poirot's Last Case' on ITV tonight at 20:00