Genre Thriller


Created by Ifan Barber
Starring Various
Opening Theme "Unknown Theme"
Location United Kingdom
Country Of Origin Unted Kingdom
Number Of Episodes 16
Running Time 42 minutes
Original Channel: Channel 4
Original Air Date March 17th 2019 - present
Produced by Channel 4
Directed by Various
Unknown is a British thriller anthology series created by Ifan Barber that premiered on Channel 4 on March 17th 2019. The first series, subtitled Where is She? ran for eight episodes and focused on the disappearance of a young girl and the investigation that followed. Shortly after the first series' conclusion, Channel 4 commissioned a second series, subtitled Quarantine, which premiered on March 15th 2020 and again ran for eight episodes, this series focused on a mysterious virus that begins infecting passengers on a luxury cruise-liner in the Atlantic. A third series is in development.


Where is She?

In a sleepy Spanish town, three young children are being taken care of by a local teenage babysitter while the children's parents dine at a nearby restaurant. However, in a seemingly unexplainable turn of events, the oldest child, 5 year old Jane, disappears. As the case unravels, the local Spanish police begin to work with their British counterparts to find Jane and restore peace to the once-tranquil Costa Del Cielo.


As a Caribbean cruise begins its final 24 hours before docking in Northampton, a stream of passengers fall sick with an unrecognisable disease. The on-board doctor believes he has it under control, until passengers start decomposing rapidly while still alive. Determined to contain the fast-spreading disease, the ship's security takes drastic action.


Series 1: Where is She?

Series 1 of Unknown premiered on March 17th 2019 and ran for eight episodes, all broadcast in a 1-hour time slot.

Episode Title Synopsis Airdate
1 Where is She? March 17th 2019
2 Unexpected Arrival March 24th 2019
3 Unfolding Events March 31st 2019
4 The Babysitter April 7th 2019
5 Frightened April 14th 2019
6 Media April 21st 2019
7 Climax April 28th 2019
8 Return May 5th 2019

Series 2: Quarantine

Series 2 of Unknown premiered on March 15th 2020 and ran for eight episodes, all broadcast in a 1-hour time slot.

Episode Title Synopsis Airdate
1 Sickness March 15th 2020
2 Quarantine March 22nd 2020
3 Communication March 29th 2020
4 Sacrifice April 5th 2020
5 Decision April 12th 2020
6 Spread April 19th 2020
7 Survival April 26th 2020
8 Discovery May 3rd 2020
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