The Cipher (podcast)
The Cipher is a science fiction thriller podcast by Goldhawk Productions and BBC Sounds starring Anya Chalotra and Chance Perdomo.

Background 
The podcast debuted in late December 2020 and reached #1 on the iTunes' drama chart as well as #5 on the fiction chart. The podcast was recorded during the COVID-19 pandemic. The show was produced by Goldhawk Productions.  The show is on BBC Sounds and is available as a boxset. John Dryden, the director of Passenger List also directed The Cipher.  The show stars Anya Chalotra and Chance Perdomo. The show is a science fiction thriller podcast that follows the story of a protagonist named Sabrina. The podcast was a 2021 nominee for best scripted fiction podcast at the Webby Awards.

References 

Audio podcasts
2020 podcast debuts
2021 podcast endings
Mystery podcasts
Thriller podcasts
Science fiction podcasts
Scripted podcasts
British podcasts