It is characteristic of Causeway’s restraint that we never see the incident that caused army engineer Lynsey (Jennifer Lawrence) to return from Afghanistan with a severe brain injury. Even when she describes the traumatic experience of being in a vehicle blown up by an IED, she talks about it dispassionately, as if she is describing something that happened to somebody else. As Lynsey must relearn some basic motor functions, we might expect the film to focus on the arduous nature of her physical recovery, but Causeway moves past her period in a rehabilitation centre (featuring a tiny gem of a supporting turn from Jayne Houdyshell) before the first quarter of the film has elapsed.