A gripping police thriller hailed as "the best since Line of Duty" is available to stream for free now. Featuring Happy Valley's Siobhan Finneran and The Crow Girl's Katherine Kelly, the six-part series centres on DI Liz Nyles (Finneran), who discovers herself at the heart of a security breach within her witness protection unit. The synopsis reads: "Personally compromised by an affair with a colleague, she is determined to fight back, and uncover the true source of corruption within her unit.