The film stars Tim Roth, alongside a supporting cast featuring Bitsie Tulloch, David Dastmalchian, Tate Ellington, Nailea Norvind, Claire van der Boom, Maribeth Monroe, Robin Bartlett, and Sarah Sutherland.

He tenderly bathes and dresses her, and manages her daily activities; for example, sends her visiting family away when she needs rest and helping prepare meals for her.

He tells her that he was married for 21 years, that his wife was called Sarah and that she died of AIDS.

David denies the charges but admits to working extra shifts because he was attached to John.

David's friend (and former boss) Isaac gets him a job with Martha, who has cancer and needs support for chemotherapy appointments.

Later David goes for an outdoor run (he has been seen jogging both in the gym and outside during the movie) and whilst doing so is struck dead by a car.

The website's critical consensus reads: "Chronic demands patience from the viewer -- and yields rich dividends with an affecting story and a committed starring performance from Tim Roth.

"[7] Metacritic reports a 69 out of 100 rating, based on 17 critics, indicating "generally favorable reviews".