Isla Fisher has signed on to join her husband Sacha Baron Cohen in the Warner Bros. comedy Grimsby.

The story centers on a highly-trained British spy (Mark Strong) who is forced to go on the run with his idiotic soccer hooligan brother (Sacha Baron Cohen). Isla Fisher is said to be playing either a "femme fatale or other comely vixen." She joins a supporting cast that also includes Annabelle Wallis, Rebel Wilson, David Harewood, Ian McShane, Gabourey Sidibe and Johnny Vegas.

Louis Leterrier (Now You See Me, Clash of the Titans) is directing from a screenplay by Phil Johnston (Cedar Rapids), Peter Baynham (The Dictator) and Sacha Baron Cohen, based on an original story by Sacha Baron Cohen and Phil Johnston. Sacha Baron Cohen and Nira Park are producing, with shooting scheduled to begin this summer.

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Isla Fisher is coming off of roles in The Great Gatsby and Now You See Me, and she will next be seen in Life of Crime, arriving in theaters August 29.