The multi‑platform event centres on the Fugitive Doctor (Jo Martin) and will unfold across comics, books, audio, games and digital releases throughout the summer . . .

The UNIT launch chapter, written by Esmie Jikiemi‑Pearson, follows newly appointed Head of the Black Archive Osgood (Ingrid Oliver) and her assistant Andrew (Omari Douglas).
When objects from the Archive are suddenly pulled through time and space, they bring with them a dangerous energy signature that threatens to rip reality apart — forcing Osgood and Andrew to call in the one person who might help: the Fugitive Doctor . . .

This isn’t a run‑of‑the‑mill crisis. As the Doctor confronts long‑time foes including the Daleks, Cybermen, Sontarans and a rogue Weeping Angel, hidden forces and uneasy truths begin to surface . . .
Trust between UNIT and the Doctor frays as those who once idolised her start to wonder whether she is the Time Lord they thought they knew . . .

Circuit Breaker is being delivered as a connected story across multiple partners and formats — comics, magazines, audiobooks, games, children’s and adult books, and Big Finish releases — giving fans many ways to follow the full narrative.

Full release schedule . . .
- 25 June: UNIT website — “Calling the Doctor” by Esmie Jikiemi‑Pearson (launch chapter)
- 8 July: Titan Comics — “Adversary of the Daleks” by Dulce M. Montoya & Dan Watters; art by Roberta Ingranata & Sami Kivelä
- 23 July: Doctor Who Magazine (issue 632) — “The Honourable Society” by Jason Quinn; art by Anthony Williams
- 30 July: BBC Audiobooks (Audio Original) — “The Deadliest Weapon” by Steve Lyons, narrated by Jo Martin; David Banks appears as the Cyber‑Leader
- 4 August: Titan Comics — “Dawn of the Daleks” by Dulce M. Montoya & Dan Watters; art by Roberta Ingranata & Sami Kivelä
- 6 August: East Side Games — “Castling” by Mario Mentasti
- 17 August: UNIT website — “Don’t Blink!” by Esmie Jikiemi‑Pearson
- 20 August: Puffin — children’s book “The Doctor and the Three Witches” by Janelle McCurdy
- 27 August: East Side Games — “Moment Mori” by Mario Mentasti
- 31 August: The Black Archive Files — Circuit Breaker DVD release
- 3 September: Penguin Random House / BBC Books — “The Kaleidoscope,” a book by Jo Martin
- 22 September: Big Finish — audio story “Full Circuit” by Robert Valentine
- 24 September: Big Finish — two audio shorts (Short Circuits), including “Battleships” and “Get Rich or Die Trying” (creative credits include Alex Hewitt and contributions from Natasha Siegel)
Circuit Breaker promises a summer of interconnected Doctor Who storytelling, with Jo Martin’s Fugitive Doctor at the heart of a mystery that reaches across formats.