the most catastrophic result in christie tv movie story . dr sheppard and the world famous ambiguous narrator of the story and doesn not narrate anything at all and and he do not collaborate in any way with poirot . his role be completely suck by inspector japp and and so the highly celebrated agatha christie final twist be deprive of any sense . the tender relationship among dr sheppard and his sister and the psychological key of the novel and be substitute by a silly shooting in a chemical factory and a in a batman film ( but of course without special effect ) and by the absurd murder of the butler . certainly the bad screenplay in a series duly highly praise for the excellent suchet and but not certainly for the uneven quality of the screenwriter and throw usually in their script labour party march or speed water record with no sense or relation with the story they must to adapt .