Silent Witness

When the pathologists investigate three suspicious deaths in one night on the same ward, it looks like hospital staff may be behind their murders.

Nikki's mental instability worsens, and Harry and Leo are forced to get her psychiatric help. But then when the true identity of the murderer is discovered, it becomes a race against time to save Nikki's life.

Leo finds himself haunted by past memories when he returns to Sheffield after an ancient body is unearthed.

Leo investigates a potential copycat killing but the team are starting to wonder if Karl Bentley was wrongly convicted.

As Nikki investigates the drowning of a young mother, Harry is called to an apparent suicide at a nearby army base.

Having established that Lieutenant Lockford was murdered, Leo makes a startling breakthrough and the investigation begins to unmask.

When human rights lawyer Anna Sandor calls Harry to Budapest to investigate the death of a client, they start to uncover a sinister underworld conspiracy.

With Harry dead, Leo and Nikki get nowhere with the police as they struggle to clear Harry's name

After a major incident at the Dutch Embassy, Harry and Nikki are removed from the case when the Dutch decide to appoint their own pathologist.

When the Van Burens' au pair commits suicide, the pathologists start to unravel the truth behind the embassy.