As Scorpia orchestrates the final stages of their plan to threaten the lives of an entire city, Alex must go back undercover in a desperate bid to stop Julia Rothman before it's too late.

Cast: Otto Farrant, Stephen Dillane, Vicky McClure, Brenock O'Connor, Ronkẹ Adékoluẹjo, Marli Siu, Thomas Levin, Jason Wong, Sofia Helin, Shelley Conn