Thin Air: Part 1

Series 2.

Episode 4.

Boyd and the team are called into investigate following the discovery of a dress in a lockup that belonged to a young girl who disappeared from Hampstead Heath whose body was never found ten years ago.

As they delve into the case of missing teenager Joanna Gold they discover family secrets, drugs, a younger sister with an eerie resemblance to the missing Joanna and a murdered former nanny.

but throughout the high profile case the team struggle to answer the most puzzling and most important question is Joanna Gold dead?