[coolsome]

The next seires will be the last one its been confermed there filming the last books.

ITV are to produce the final season of Poirot in 2012[4]:
There are four novels:

• The Big Four (1927) (which itself was based on a collection of short stories)
• Dead Man's Folly (1956)
• Elephants Can Remember (1972)
• Curtain: Poirot's Last Case (1975)

and a collection of 12 related short stories:

• The Labours of Hercules (1947)