Guilt

The darker side of London is full of sex, murder and intrigue.

As the investigation into Molly Ryan's murder heats up, all eyes are watching what Grace does next. With strict instructions from Stan to not leave the flat, Grace is determined to attend Molly's memorial service regardless.

Now that Molly's murder has become a world-wide story, Grace becomes the target of social media bullying.

Natalie discovers that crown prosecutor Gwendolyn may not be as unbiased in her investigation of Grace as she would have others believe. Detective Sergeant Bruno must decide if he will let it affect the Molly Ryan murder case. Now with public opinion in her favor, Grace encourages her boyfriend Luc to move forward with his art show despite his continued drug use.

A weary Grace spends the night at the police station, only to be accosted by paparazzi when she tries to leave. After agreeing to go off with the Good Samaritan, she begins to suspect that he has darker intentions. When Natalie realizes Grace is gone, she and Detective Bruno frantically search the city, hoping to find her sister before it's too late.

While Luc is on lockdown at the police station, Gwen tries to finally get the piece of information she has been desperately looking for to link Grace to Molly's murder. They recruit Natalie to seduce Finch as a distraction, but Natalie may be in over her head when Finch takes her sexy flirtation seriously.

The case against Grace has never looked worse. Natalie confronts Grace with what she's discovered and, if anything, leaves even more disturbed by her sister's potential guilt especially after Bruno shows her a tape of Grace planting evidence. But before giving up on her sister completely, Natalie turns to an unlikely source for information about Molly's murder.

As Stan works on Grace's defense, Graces struggles to remember a chunk of missing time on the night of Molly's murder.

Stan and Gwen face-off in the courtroom as the "Grace case" finally begins. Natalie and Bruno try to find new evidence to prove Grace's innocence before it's too late, and Grace pursues another way of gaining her freedom.

The verdict is in and Molly Ryan's killer is finally revealed.