New on DVD and Blu-ray

Safety Not Guaranteed; Your Sister’s Sister; Polisse

Safety Not Guaranteed

(Sony, $31)

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Your Sister’s Sister

(MPI Home Video, $25)

The “infinitely watchable” Mark Duplass is also featured in this “ingeniously structured” love-triangle drama, said The Philadelphia Inquirer. He plays a grieving man who sleeps with one woman only to realize he’s in love with her sister. Rosemarie DeWitt and Emily Blunt co-star.

Polisse

(MPI Home Video, $25)

Imagine an ensemble TV police series made with “grit, naturalism, and fireworks,” said The Boston Globe. Not every scene works in this documentary-style French drama about a police child-protection unit in Paris, but it was still one of the best films I’ve seen this year.