Set against the backdrop of Bath, a city steeped in 3,000 years of history, Gillian and her team – Dr Ben Akomfrah (forensic, objective), Professor Gregory Parton (encyclopaedic but terminally louche) and eager young post-grad intern Viv Davis – are brought in under a variety of imperatives to extract bodies, books, weapons and all manner of artefacts which lead them into an investigation of the past that will unlock dangers and mysteries in the present.