What a waste of Kristin Scott Thomas this French psychological drama is. In a role that might have been tailor-made for her elegant froideur, she is Anna, a surgeon kidnapped late at night and held hostage in a grotty flat by dishy Yann (Pio Marmaï). The story begins in the middle, as Anna escapes, blinking into the light. Back at home, she frantically plugs in her phone to discover, crushingly, no one has noticed her disappearance: just a few messages from a married lover and irritated colleagues. Flashbacks return to her captivity. Early scenes between Anna and Yann – convinced he’s the victim of her professional misconduct – are thrilling. She’s in every way his superior, batting him away like a schoolboy and icily dismissing his grievances. The weak link is the script, which implausibly turns on Anna developing Stockholm Syndrome. The result is disappointing, though not as much as the fact that we never see Scott Thomas in juicy roles like this in Britain.