John Crowley of "Boy A" will get to work directing the still untitled suspense thriller written by Steven Knight of "Eastern Promises" this April and he has locked down on his two leads.

"Focus Features" and "Working Title Films" just announced the upcoming start of production and confirmed that Australian actor Eric Bana and Rebecca Hall will handle the starring roles.

According to the press release, the film centers on Bana and Hall where they will portray the roles of ex-lovers in the movie who will find their loyalties tested and their lives at risk when they are joined together on the defense team in a terrorism trial.

The production will begin this April in the United Kingdom.

Bana is best known for his starring roles in "Hulk" and "Munich" while Hall has earned strong notices for her recent work in "The Town" and "Vicky Christina Barcelona."

Eric Bana recently completed his work on the crime drama "Blackbird" with Olivia Wilde. He is also attached to "Elvis & Nixon" as the executive producer and portrays the role of Elvis Presley in the movie as well as Robert Luketic's thriller "Brilliant." Rebecca Hall's "Lay the Favorite" with Bruce Willis and Laura Prepon just debuted at the Sundance Film Festival.

With the announcement of the cast and production start date, "Focus Features" CEO James Schamus and President Andrew Karpen released a statement.

"Working Title and John Crowley have not only crafted a nail-biting thriller, but an emotional rollercoaster as well, one that speaks to the heart of the human condition in our time," Schamus and Karpen shared.

"Focus Features" President Andrew Karpen and Working Title Co-Chair Tim Bevan will produce the film with Chris Clark of "The Guard". "Focus Features" will hold worldwide rights to the film and sell overseas rights at Cannes.

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