
7.1
One victim, found dead on a London street. Four detectives, in four different time periods, must solve the mystery to protect Britain's future.
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1Episode 1'You're Dead Already'
55 min
In 2023, Detective Hasan discovers a dead body in Longharvest Lane, Whitechapel — while in 1941 and 1890, two other detectives find the same corpse.
2Episode 2'Do You Know Who I Am?'
55 min
Hasan follows new leads in the present. As Hillinghead reluctantly closes his case, Whiteman goes to desperate lengths to hide involvement in his own.
3Episode 3'All In Good Time'
57 min
Connections between the cases start to come into focus. Whiteman encounters an unexpected complication; Hillinghead attends a séance.
4Episode 4'Right Up the Wazoo'
56 min
Hasan discovers she isn't the only detective investigating a murder on Longharvest Lane. In the past and future alike, relationships start to deepen.
5Episode 5'We Are One Another's Ghosts'
57 min
The past, present and future collide as a set of fingerprints from 1890 are found in 2023. Maplewood uncovers the Commander's true identity.
6Episode 6'The World Is Yours'
55 min
On the day of the explosion, Hasan does everything in her power to help Elias make a life-altering choice. The others wrestle with their consciences.
7Episode 7'Catch Me If You Can'
59 min
Elias finally knows what it means to be loved. He creates the family he's always wanted — but Hillinghead has to suffer for it.
8Episode 8'Know You Are Loved'
61 min
Across decades, the detectives work together to stop Elias from reshaping history. Will words be enough to break the loop and save thousands of lives?

Jacob Fortune-Lloyd
Charles Whiteman

Shira Haas
Iris Maplewood

Amaka Okafor
Shahara Hasan

Kyle Soller
Alfred Hillinghead

Greta Scacchi
The Lady

Stephen Graham
Mannix
7.1