Season 2 finds Lucy (Jessica Raine) and Gideon (Peter Capaldi) forming an uneasy alliance to prevent another tragedy and hunt down an elusive monster. Lucy’s double life leaves her torn between family and duty as she finds herself a thorn in the side of her former husband, Ravi Dhillon (Nikesh Patel). Assisting Dhillon in his investigation is Detective Sergeant Sam Boyd (Saffron Hocking), who was a mentor to Detective Sergeant Lucy Chambers in a previous life. Meanwhile, Isaac (Benjamin Chivers) discovers new emotions every day, struggling to balance himself in a reality that denies him his existence. New mysteries are revealed as our story focuses on an explosive moment that will change the fate of our characters for the rest of their lives.