The Silence - Episode 2

Amelia identifies one of Jane Shilliday's killers, a detective on the Drugs Squad. When Jim learns that Rocky and Shilliday were romantically involved, he is certain that the large scale corruption on the Drugs Squad was the motive for Jane Shilliday's murder, but he can't prove it. When Amelia's implant is returned to her via her audiologist, she realises, with horror, that Shilliday's killers know who she is.