In Treatment S01 E21 Ariane – Monday, December 14, 2015, 9 a.m.

Ariane almost lost a 15-year-old patient, injured during the Bataclan attacks. Upset, she looks back on her own adolescence and makes important revelations about Serge, her father's friend who spent a summer with them at the time. Ariane, obsessed with Dayan and convinced that she has endangered her patient's life, sees no other solution than to stop the therapy.