Following the brilliant forensic scientist Professor Wolfe Kinteh, as he pieces together the mysteries behind crimes in the North East.

With a missing person's life on the line, Wolfe and Maggy face a race against time to retrieve evidence from a scene that could explode at any moment.

Wolfe and co are up to their neck in it in Manchester's sewers, where a colossal fatberg holds the remains of a seemingly sadistic ritual killing.

In the series finale, Wolfe gathers his team to re-open an old case that's very personal to them. Will they be prepared for the truth?