When 16-year-old Sabrina cracks the cryptic Parallax, she’s recruited to track down a serial killer... who might not be from this world. Starring Anya Chalotra and Chance Perdomo. New episodes Tuesdays.

Cast:Sabrina – Anya ChalotraBenny – Chance PerdomoFergus – Samuel AdewunmiHarry – Enzo CilentiLynn – Leanne BestMr Ahmed – Nabil ElouahabiIsabella – Hera HilmarEfrat – Olivia PopicaKen – Akie KotabeOther parts: Carl Prekopp, George Georgiou, Hugo Dryden, Clare Corbett, Kerry Shale

Production Team:Written & Created by Brett Neichin with additional writing by Janina MatthewsonScript editing by Mike WalkerMusic by Benbrick and Mark Henry PhillipsEditing & Sound Design by Steve BondSound Assistant, Makashe OgbonAssistant Producer, Eleanor MeinTrails by Jack Soper

Produced by Emma HearnDirector and Executive Producer, John Scott DrydenCommissioning Editor, Jason PhippsCommissioning Producers: Rachel Simpson, Ella Woods and Eli Sessions

Recorded at Sonica Studios, London

The Cipher is a Goldhawk Production commissioned by BBC Sounds.