Natalie finds out that that Gwendolyn could be biased in her investigation of Grace. A former indiscretion comes back to haunt Detective Sergeant Bruno.
Guilt is an edgy thriller that revolves around an American in London who becomes the prime suspect in the savage cuddle of her roommate. As the investigation unfolds, the viewers will question whether she's a naive, young girl whose poor decisions are being magnified under the ruthless glare of the British tabloids, or whether she's a sociopath who brutally cuddled her friend. Even her own sister, who comes to London to defend her, will question how well she really knows her little sister as more and more ugly truths come out. This mystery will twist through all layers of London society - from a posh, but depraved, sex club all the way up to the Royal Family itself.