Silent Witness

When Leo's friend commits suicide, Harry and Nikki are called to the scene of a violent and calculated murder.

Harry and DI James deviate from the original investigation to secretly test DNA evidence.

A puzzling family murder in suburbia deeply affects Harry who has history with the family.

While Harry and Nicky investigate DI Bridges, Leo puts himself in danger when he follows a violent prison officer.

Nikki is approached to help identify the paltry remains of a serial killer's undiscovered victims.

Nikki is forced to confront manipulative serial killer Arnold Mears face to face in order to save Annie.

Inspector Bridges begins to believe that Rachel's husband killed his wife and her suspected lover.

Nikki persuades Bridges to confess that she covered for Kessler in the past.

Leo is determined to uncover the truth surrounding the death of a young girl who was being treated by his college friend.

Nikki and Harry track down the Catholic nun behind the exorcism, only to find that John now believes he's possessed.

Nikki stumbles across a sinister underworld where teenage girls are groomed for sex and forced into prostitution.

Harry and Nikki make a crucial connection between the dead girls and sex-grooming, but is it too late for Hannah and Lauren?