The team struggle to find the final piece of the puzzle left behind by the murders in Brighton. At home, Nikki and Matt discuss their future together.

Aired on 01/23/2019

Emilia Fox Emilia FoxNikki Alexander
David CavesJack Hodgson
Richard Lintern Richard LinternDr. Thomas Chamberlain
Liz Carr Liz CarrClarissa Mullery