The Whistleblower Benedict Cumberbatch appears as Nick Phillips harrowing true story. The Whistleblower is based on the experiences of Kathryn Bolkovac, a Nebraska cop who served as a peacekeeper in post-war Bosnia and outed the U.N. for covering up a sex scandal. Rachel Weisz stars as Kathryn Bolkovac alongside Monica Belluci and Vanessa Redgrave. The movie was released in the US in August 2011. Buy The Whistleblower on dvd and blu-ray.