Doctor Who Logo 'Branches':
'The Only Girl in the World'

(1 Part)

by John Dorney
Jacket Illustration

Searching for the missing Cass, the Doctor and great-grandson Alex attempt to cross from one end of an unfamiliar universe to the other. Along the way, they meet this reality's version of their friend - the buccaneering Cassie, who has a destiny of her own.

Charting the Uncharted, they will discover what became of the Daleks in this universe, and that someone else has come looking for them... Susan!

Searching for Cass, the Doctor and Alex find themselves on board an odd slave spaceship with a version of their friend from the Uncharted universe - the swashbuckling and dangerous Cassie.

Cassie is seeking revenge for the destruction of her homeworld - believing her destiny is to stop Mr Karl, the ruthless killer who obliterated it. But if that is her destiny, why is it so hard to fulfil?


Paul McGann (The Doctor), Sonny McGann (Alex Campbell), Emma Campbell-Jones (Cassie Fermazzi), Nicholas Briggs (Mr Kal), Akbar Kurtha (Tabir), Kate Harbour (Tarranah / Roboman)

Directed by Ken Bentley

Release Date:
May 2026

Notes:
*Featuring the Eighth Doctor and Alex, and Cassie

*A Big Finish Audio Production