Dr Nikki Alexander and the team at the Lyell Centre must solve five more thrilling mysteries in this award-winning BBC crime drama. Starring Emilia Fox, David Caves, Liz Carr and Richard Lintern.  A body in the concrete pillar of a car park. A downed plane. Scientific research gone wrong. The cases that end up at the Lyell Centre are rarely straightforward. Initial suspicions are challenged as the evidence mounts, and Nikki and the team must work harder than ever to find the truth.