Silent Witness Season 12 Episode 10

The Lost Child (2)

The search for Liam resumes. Nikki's loyalty towards her former mentor, Noel Hopkins, is severely tested when past allegations of sexual misconduct from a former student surface. Leo and Harry refuse to give up their search for Liam, as they try to identify and locate a toxic chemical which was found in both bodies. If they can find the source of the chemical, they may find where Liam is being held.