Doctor Who: Shada

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Shada was originally intended to be the sixth and final serial of Doctor Who Season 17. It was written by Douglas Adams and directed by Pennant Roberts. It stars Tom Baker as the Fourth Doctor, Lalla Ward as Romana, Denis Carey as Professor Chronotis, Christopher Neame as Skagra, Daniel Hill as Chris Parsons, and Victoria Burgoyne as Clare Keightley.

It was partially filmed in 1979 but never completed or broadcast at the time due to a BBC strike. It was finally aired on December 26, 2017, with animation completing the unfilmed scenes. Despite its incomplete status, Shada has gained legendary status among fans.

The Doctor and Romana visit Cambridge to help the kindly Professor Chronotis with a stolen Gallifreyan book, only to uncover Skagra’s plan to find the lost Time Lord prison world of Shada.

Episode One

In Cambridge, autumn light slants across courtyards as Professor Chronotis (amiable, absent-minded, and far older than he looks) writes a timid note: would the Doctor please pop round? He has misplaced a very dangerous book. The Doctor and Romana arrive at St Cedd’s in time for tea, crumbs, and the confession: Chronotis once stole “The Worshipful and Ancient Law of Gallifrey” from the Time Lords and has been hiding it in his rooms for centuries.

Unfortunately, a keen postgraduate, Chris Parsons, has just borrowed it to show a friend in the physics lab. Elsewhere, a man in white with a velvet smile (Skagra) steps from an invisible ship parked in a mews and releases a humming silver sphere that feeds on minds. Time hiccups subtly around the college as the Doctor laughs at old stories, then goes very still when the title page glows with archaic symbols.

In the lab, Chris opens the volume; equations flower like constellations, instruments go wild, and the sphere glides in through a vent to drink. The Doctor follows the shockwave to a trail of stunned porters and empty thoughts. Romana traces a stubborn interference pattern that feels like a cloaked starship. On a river lined with punts, Cambridge looks unchanged: but something hungry is turning pages.

Episode Two

Chris, shaking, hides the book and phones the professor; Chronotis’s cheerful facade cracks. He admits the volume is a key, not a text: a lock of sorts upon a place the Time Lords pretend does not exist. Skagra saunters into college in a ridiculous hat, the sphere hovering like a pet, and asks for Chronotis with quiet menace. The Doctor meets the device head-on in a corridor; the sphere clamps to his temples and finds too much mind to swallow.

He buys seconds with banter and trickery; Romana wrenches it off with a sonic lash, and it rockets away, dented and furious. In the physics lab, oscilloscopes draw impossible curves; Chris’s friend is left grey and empty by a second feeding. Chronotis fumbles for tea, murmurs about retirement, and then dies: hearts falter, timeline slips, and he goes slack in his armchair.

The Doctor hauls his TARDIS into the don’s sitting room and rewinds the professor’s personal time by a whisper, coaxing him back with scolding affection. Skagra retrieves the book by sleight-of-hand and strolls out through a bricked-up passage that wasn’t bricked up a moment before. Romana triangulates the cloaking field to a quiet side street. Fog hangs low. An invisible door opens. Skagra smiles and gestures her inside.

Episode Three

Skagra abducts Romana and the book to his spotless, insinuating ship; the sphere nuzzles her cheek like a threat while he purrs about building a single, perfect intellect from many lesser minds. He needs one last component: Salyavin, a Time Lord legend locked away where legends go. The book will show the path.

The Doctor, Chris, and K9 burst into Chronotis’s rooms to find the truth hiding in plain sight: the professor’s shabby chambers are a TARDIS, doors that open onto corridors that smell like dust and stars. Chronotis, resurrected and sheepish, confesses a little more: he stole the book long ago to keep a worse thief from reaching certain cells. With the college quads sliding behind them, the Doctor pilots the elderly craft in pursuit. At 20,000 feet over Cambridgeshire, Skagra uses the book to compute a location that exists and does not: then orders Romana to set the Doctor’s TARDIS to follow when he inevitably arrives.

In the quiet between alarms, she learns the ship is vain and a little lonely. The Doctor boards mid-flight with a grapnel, loses his grip, and is rescued by K9’s tow-beam. Skagra locks him in a glass cage and lets the sphere taste his mind again. The Doctor smiles through pain. “How many courses is this?”

Episode Four

Skagra’s ship dives into deep space and moors to a silent carrier packed with mind-canisters: souls harvested over years to form the core of “One.” The Doctor escapes through ducting, finds the storage bay, and talks gently to the carrier’s sulky computer until it admits it dislikes Skagra’s tone.

With the book complete, coordinates bloom: Shada, the Time Lords’ lost prison, slides out of legend. Skagra hijacks the Doctor’s TARDIS as a better key and forces a landing amidst cyclopean blocks and sleeping vaults. Guardians of porous glass (the Krargs) shamble from their pens at a whisper from Skagra’s command crystal. Romana is sent to open the control chamber; the Doctor dons a guard’s cloak and bluffs past a Krarg that does not understand humour.

In a row of cells lie names no one repeats; one niche is labelled SALYAVIN and stands empty. Skagra rages at the absence and orders the prison’s computer to wake everyone else for “assimilation.” On Earth, Chronotis potters to his kettle, then admits to Chris he once had a reputation for moving minds by suggestion alone. In Shada’s gloom the Doctor reads an old engraving and understands. He calls the professor on the carrier’s intercom and addresses him by his forgotten name. “Salyavin, time to come home.”

Episode Five

Chronotis (Salyavin) steps through his own TARDIS door into the prison he escaped long ago, older and gentler, still carrying the talent that terrified Gallifrey: the ability to project his mind into another’s and nudge it. Skagra, triumphant, begins the transfer: Krargs hold Romana, the sphere clamps to the Doctor, canisters thrum.

Salyavin whispers inside the chain, slipping thoughts sideways, making the megamind stutter on pronouns. K9 bites at crystalline ankles to little effect; Chris hot-wires a gantry and drops a Krarg into coolant. The Doctor programs the carrier ship with a new primary directive (recognise him as captain) and it develops an instant, fawning loyalty. Skagra howls, flings the sphere to the ceiling, and orders Shada’s failsafes to purge “meddling elements.” Vault lights flare. Salyavin inhales, pushes hard, and every Krarg in the hall forgets who to crush for exactly the right five seconds.

That is enough. The Doctor yanks cables, Romana flips a phase, and the canisters go quiet. Skagra flees into the carrier in a stolen skiff, broadcasting coordinates for conquest. The newly adoring ship smiles (in its way), locks its doors, and informs its ex-owner he has no further bridge privileges. On Shada, the sleepers slide back into stasis; the book cools in Romana’s hands, no longer eager to open.

Episode Six

Loose ends knot. The carrier (now the Doctor’s most besotted fan) sails after Skagra, herds him into an escape pod, and ferries him neatly to the nearest suitable cell: Shada’s deepest, where the computer files him under “tiresome.” The Time Lords send nobody; officially, the place does not exist.

Salyavin declines absolution and greater punishments alike, choosing the life he already lives: tea, tutorials, and forgetting to wind the clock at St Cedd’s. He shows Chris and Clare how to step across the threshold of his TARDIS without noticing and persuades them it was a very odd dream. The Doctor slides the book back onto an impossible shelf; it becomes a harmless antique again. On the river, punts bump in easy water while the college bell counts the hour.

Romana wonders aloud if any prison is safe forever; the Doctor answers that legends are locks as much as doors. Somewhere between realities, a silver sphere pings the glass of its own jar and goes still. Back in the TARDIS, the ship that wanted to be his pats the console with a shy bleep, then departs to “patrol” unsolicited. The rotor rises and falls. “Cambridge again?” Romana asks. “Later,” the Doctor grins. “I owe a book a quiet retirement.”

Themes

As the ghost finale of Season 17, Shada feels like the missing chord of the Adams era: collegiate whimsy spliced to high-concept Time Lord lore. On the strength of what survives, it plays above amiable romps like The Creature from the Pit and The Horns of Nimon, and just a shade beneath the urbane clockwork of City of Death.

It won’t displace titans such as Genesis of the Daleks or the jewelled precision of The Robots of Death, but its Cambridge caper, book-bound menace, and effortless Doctor–Romana rhythm suggest an upper-mid-tier adventure that could have soared with full completion. Even half-glimpsed, the tone is crystalline: witty, curious, and quietly grand.

Continuity-wise, Shada would have knotted the Randomiser wanderings from Destiny of the Daleks and City of Death through Nightmare of Eden to a finale that deepens Gallifreyan myth first sharpened in The Deadly Assassin and embattled in The Invasion of Time. The “forbidden book” and prison-world ideas foreshadow later jurisprudence in The Trial of a Time Lord, while Professor Chronotis’s gentle exile rhymes with earlier “science in robes” tales like The Stones of Blood.

In the programme’s strange fate, fragments of Shada surface to fold the Fourth Doctor into The Five Doctors, and its absence clears the runway for the colder reset of The Leisure Hive, before paths bend toward E-Space in Full Circle and Warriors’ Gate. By its lingering afterimage, Shada closes one bright, witty chapter and leaves a tantalising echo of what might have been.

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