Season 1 · Episode 4 — Episode 4

After the murder of a young mother in London, there's a climate of fear, and catching her killer becomes a national obsession. So police de…

The undercover operation gains momentum as prime suspect Colin Stagg starts to fall for covert officer 'Lizzie James'. But when the honeytr…

Covert officer 'Lizzie' meets suspect Colin Stagg face-to-face and attempts to earn his trust. But as the weeks pass, the pressure she's un…