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 so Harry and Leo are forced to get her psychiatric help.

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.