The Whistleblower is a 2010 thriller film directed by Larysa Kondracki and starring Rachel Weisz. Kondracki and Eilis Kirwan wrote the screenplay, which was inspired by the story of Kathryn Bolkovac, a Nebraska police officer who was recruited as a United Nations peacekeeper for DynCorp International in post-war Bosnia and Herzegovina in 1999.

The directorial debut of the Canadian filmmaker Larysa Kondracki, this grueling expose of human trafficking in postwar Bosnia teeters in an uneasy balance between quasi-documentary and fiction.

It is based on the true story of Kathryn Bolkovac, a police officer from Lincoln, Neb., who accepted an offer to join the U.N. peacekeeping mission in Bosnia. While there, she uncovered direct evidence that underage girls were being held captive and bought and sold in a profitable sex trafficking operation. When she presented her evidence to her superiors, it was ignored. When she persisted, she was fired.

"The Whistleblower" tells a story so repellent that it is almost beyond belief. Its conclusion - that in the moral quagmire of war and its aftermath, human trafficking and corruption are collateral damage - is unutterably depressing.

The Whistleblower premiered on September 13, 2010, at the 2010 Toronto Film Festival. Screenings were also held at film festivals in North America, including the 2011 Human Rights Watch Film Festival in New York.