Pascal Thomas began his career with estimable French comedies; then, in the naughties,he began to adapt Agatha Christie,with "Mon Petit Doigt M'a Dit" feat Thomas and Tuppence Beresford (the names were Frenchified ) and he used again the husband-and-wife detectives in his latest effort "Le Crime Est Notre Affaire".
I read "towards zero" a long time ago but I've got a vivid memory of it;once again the names were Frenchified : Nevile and Kay Strange (check the surname)became Guillaume and Caroline Neuville(sic);in the role of the wife ,Laura Smet (daughter of Johnny Hallyday and actress Nathalie Baye) overplays and turns the original character -an elegant mysterious woman- into a shrew :one really wonders why Guillaume fell for her.
The book begins,if my memory serves me well,with a long chapter depicting the numerous characters :like in any Christie book,all MUST have a reason to commit a murder;the first fifteen minutes are faithful to Christie's spirit.So is the rest of the movie ,although it almost verges on parody and it has not the entertaining side of "Mon Petit Doigt".Thanks to Danielle Darrieux (an old lady who has been working since ... 1931!such a longevity is absolutely stunning and the actress is as good as when she used to make movies with Henry Decoin,Julien Duvivier,Max Ophuls or (yes!) Billy Wilder and Joseph Mankiewicz) who enjoys smoking opium ,this is worth a look ,at least on a rainy day.