The Premise: Scott (Ben Platt) is finally following his dreams all the way to Paris to become a writer. But the universe is a bitch, and by way of obstacles, Ben’s got a newly dead dad, a mother lost to dementia, and a sister, Cindy (Lola Kirke), who is normally hospitalized with schizophrenia is about to become unhospitalized, unmedicated, and very much Scott’s problem. Is he his sister’s keeper?

The Verdict: Movies about mental illness often flirt with exploitation, and while Cindy’s character, and her plight, do serve her brother’s growth and character arc, Broken Diamonds tries to paint a full picture of an illness that is disruptive and damaging and sometimes just part of the package. Platt and Kirke are both very good, very watchable, and the story benefits from its small scope. Schizophrenia is a family disease. Their family has suffered together, and apart. It has left its members battered. It has demanded sacrifice. Platt is of course very good at showing us the inner turmoil of deciding when enough is enough, but it is Kirke who has the heavy load, allowing Cindy to be a woman who is more than just sick. Emotional but undemonstrative, Broken Diamonds is character-driven and intimate, an interesting exploration of the complicated equation between siblings.

Directed by: Peter Sattler, starring Ben Platt, Lola Kirk, Yvette Nicole Brown; find it July 23rd in theatres and on demand.