Rachel Weisz will star as a Mid-Western police officer who exposes a United Nations cover-up in post-war Bosnia in the political thriller The Whistleblower.

Nicolas Chartier of Voltage Pictures will introduce the project to buyers in Cannes next week and UTA is handling US rights.

Larysa Kondracki makes her feature directorial debut based on a screenplay she co-wrote with Eilis Kirwan and is preparing to shoot later this year in Budapest.

Amy Kaufman of Primary Productions, Christina Piovesan of First Generation and Plum Pictures’ Celine Rattray are producing.

The Whistleblower centres on a Nebraskan police officer serving as a peacekeeper in post-war Bosnia where she uncovers corruption and a sex trafficking ring.

Weisz is represented by Endeavor, Independent Talent, Brillstein Entertainment Partners and law firm Hirsch Wallerstein Hayum Matlof & Fishman.

She will next be seen in Alejandro Amenabar’s historical drama Agora, which screens out of competition in Cannes, and Peter Jackson’s The Lovely Bones.