It’s a case of great premise, decent film as director Guillaume Canet takes Harlan Coben’s US source novel and gives it the Gallic once-over. That premise? Doctor Alex Beck (François Cluzet) receives an email from his missus Margot (Marie-Josée Croze)... who’s been dead for eight years. Eh? Playing as a whodunnit for a crime almost a decade old, Canet cranks up the tension and dread for a reveal that cannot help but dump hysteria all over the earlier subtlety. But Cluzet is an engaging hero throughout, pulling viewers onside as his confusion mounts, with vicious goons and ridiculously insensitive cops circling ever closer to keep the truth from him. Tell No One lets itself down by adding music ’n’ schmaltz interludes to an already stretched run-time, but it’s shot with a verve missing from many Stateside thrillers – something Ron Howard should take note of before paying back the cultural exchange with his US version of Hidden.