ATLANTA - They are two of the most highly respected actors working today — but in their latest film, Olivia Colman and Benedict Cumberbatch deal out some very low blows.

What we know:

The duo stars in the dark comedy The Roses as a couple at war, intent not just on ending their marriage but also on ending each other’s lives. The film is a reimagining of the 1989 hit The War of the Roses, which was based on the novel by Warren Adler.

While Academy Award winner Colman and two-time nominee Cumberbatch trade some very pointed insults in the film, their relationship is far rosier off-camera.

"She is just sort of indefatigable in her cheeriness. And it’s genuine, it’s authentic, it’s who she is," says Cumberbatch of his co-star. "She’s an exceptional actress, but most important, one of

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