An American woman travels to London to defend her sister after she becomes the prime suspect in her roommate's brutal murder.

Stan warns Grace not to attend Molly's memorial; Natalie becomes suspicious of James' evasive behaviour; Molly's brother has a confrontation with one of the prime suspects in her murder.

Bullies attack Grace on social media after Molly's murder becomes a worldwide story; Prince Theo worries that his connection to Molly may become public; James gets blackmailed with incriminating photos.

Natalie learns that Gwendolyn may be biased in her investigation of Grace; a past indiscretion comes back to haunt Detective Sergeant Bruno; Grace encourages Luc to move ahead with his art show.

Paparazzi bombard Grace as she exits the police station; a good Samaritan shows up to her rescue but she soon suspects his intentions aren't so pure; Patrick goes undercover at a swank sex club in hopes of finding his sister's killer.

Gwendolyn puts pressure on Luc to give up Grace, but Luc sticks to his story about being with Grace all night; Grace teams up with Roz to plant evidence on a new suspect.