Who or what is camper than Christmas? Why, of course, David Suchet's brilliantined, moustache-twiddling, sleuth with the habit of speaking about himself in the third person. Anyway, there's a corpse on blind old bat Anna Massey's drawing room carpet and she neither knows how it got there or why her clocks have stopped at 4.15pm precisely. Does it have anything to do with a secret wartime base beneath Dover Castle? Is Poirot Belgian?