Season 4 - Episode Guide

Emilia visits the town of Swanley to uncover the details of a tragic case that quickly turned into an international manhunt for a notorious criminal who'd be involved in the Brinks Mat Robbery in 1983.

Emilia visits Peterborough, where, in 1979, a young woman went missing, having last been seen in the city centre. The police assumed Sally Ann McGrath had simply run away, and it took nearly eight months for her body to be found. The investigation into her murder took even longer.

The quiet seaside town of Mablethorpe was an unlikely location for what appeared to be an organised hit on a couple in their 50s. Emilia travels to the Lincolnshire coast to learn about the violent murders of Joan and John Stirland in 2004.