Just when she meets a man whose eccentricities perfectly complement her own, the other shoe drops — and hard.

Anna Kendrick plays a hyperactive obsessive named Martha, who goes off the rails after she witnesses her boyfriend cheating. As shown in the exclusive trailer for Mr. Right (above), Martha links up with Francis (Sam Rockwell) post-breakup and is heartened to learn he’s equally weird — or so it would seem. While character quirks are one thing, murder is another, as Martha discovers her “sexy Rain Man” is actually a professional hit man.

But Francis isn’t your run-of-the-mill assassin. As explained by the FBI agent (Tim Roth) tracking Francis, the killer has a warped moral code whereby he takes out the people ordering the hits. As the bodies keep piling up, Martha has to navigate her budding feelings for Francis as well as the federal manhunt for him.

Find out whether this bizarre romance endures under fire when Mr. Right opens in select theaters and is available on VOD and Digital HD April 8.