In black and white a crack of light blooms into abstract patterns that ripple overhead in waves.
A large clot of light bleeds away forming words.
The words recede into the maelstrom of rippling light.
More words appear: Desperate Measures. Written by David Whittaker.
Ian is trapped on the ledge.
Rows of spikes cage him from both sides. The Doctor wrestles with the mechanism.
More spikes emerge from the wall.
The grub creature below rears up expectantly.
Ian swings around the spikes back to the Doctor.
As the Doctor works, the grub creature thrashes like an angry crocodile.
At the space rocket, Vicki and Barbara tend to Bennett.
Vicki helps him sit and gives him a beaker of water to drink.
Barbara helps him up.
She and Vicki support him through the bulkhead door.
He shrugs Barbara off.
(FAST) She tries to follow him. He slams the door in her face.
Barbara looks back at the closed door.
The spikes retract back into the wall.
The Doctor lingers however, examining the bas-relief design of the monster on the wall.
The creature below makes its way to a gap in the rocks where sunlight is streaming through.
Vicki carries two empty jerry-cans through the alien palms and cactus plants.
on the ship, Barbara is in the control room setting the table. Searching through a locker, she discovers the flare gun Vicki showed her earlier, and places it carefully back.
The grub-creature, with its sharp teeth and glowing eyes, makes its way out of the cave.
Now, on the cave ledge.
Not far from the rocket, Vicki sets the two heavy jerry-cans on the sand and rests.
Behind her, she is watched by the grub-creature, sharp teeth white in the sunlight.
Barbara, in the control room of the ship, sees Vicki out of the cabin window ...
... and the creature behind her.
Barbara opens the locker and takes the flare-gun.
She dashes out of the ship.
Barbara aims and fires.
(FAST) The flare hits the creature with a flash. Horribly burned, it writhes in agony on the sand.
In the cave.
Ian and the Doctor hurry onwards
Back at the ship, Barbara drags Vicki inside.
Puzzled, Barbara turns away.
Vicki slumps in a chair, distraught, head in hands.
Ian and the Doctor come through the door.
The travellers embrace warmly.
The cave. The door in the rock swings open.
The robed Koquillion emerges, neck fins bristling. He sees footprints in the sand and follows them.
Later, at night, Koquillion watches the ship from afar.
Inside the rocket.
She turns her back to them.
The travellers, sitting around the table, look glum.
The Doctor motions to Ian and Barbara, who get up. They slide open the cabin door and leave the ship.
He gives her a warm, compassionate smile as she sits back down at the table.
Vicki looks doubtful.
Reassured, Vicki takes his hand, and leads him through the bulkhead door.
The Doctor glances at the damage to the ship.
They stop at the door to Bennett's cabin.
Slightly cheered, Vicki gives him a small smile and leaves.
The Doctor smiles back and turns to the door.
The door is ajar and opens a crack.
The Doctor pushes on the metal door, but it doesn't open any further.
He picks up a piece of debris, and batters the door with it.
(FAST) In the control room, Vicki rearranges a chair, and then starts to tidy up the table.
The fuselage entry door slides open and Ian and Barbara return.
Vicki is still and withdrawn.
Barbara starts cleaning up the things on the table.
Barbara looks uncomfortable.
Outside Bennett's cabin the Doctor swings a heavy metal strut at the door.
It gives and swings open, and the Doctor enters the stark, utilitarian space.
Bennett is gone.
He looks around.
He opens a locker that wasn't shut properly. It is full of machinery.
He flicks a switch and listens intently.
He closes the locker.
On the wall he finds a lever and pulls it.
One of the floor grates swing open.
The control room.
Ian opens the bulkhead door and picks his way through the wreckage in the passage.
He pushes the door open. The room is empty.
Vicki and Barbara rush in behind him and look around in puzzlement, unaware of the trapdoor near their feet.
In the cave, the Doctor explores and once again finds the door set into the rock wall above the narrow ledge.
He pushes it open.
Inside is a gloomy, cavernous chamber resembling a temple. It is filled with smoke.
The Doctor descends a wide stairway, and makes his way along the centre aisle, flanked by two rows of stone columns.
He walks around with hands behind his back with the air of a tourist in a cathedral.
He inspects a table with a stylised creature depicted on it, then a ceremonial goblet on an altar flanked by elaborate candlesticks.
He finds a trunk, and flings it open, it is full of clothes.
He holds up a ceremonial robe.
In the ship.
The tusked, insect-like Koquillion descends the stairs and approaches the Doctor slowly through the smoke and gloom. It is holding the sceptre in the crook of its arm.
Bennett takes the mask off.
He advances on the Doctor.
(FAST) Bennett puts the sceptre down.
He removes the rest of the costume.
(FAST) The Doctor takes the sceptre and attacks Bennett. The sceptre triggers accidentally as they struggle.
A large chunk of wall blows out and dust fills the air.
The sceptre is broken in the struggle.
The Doctor grabs a ceremonial blade and strikes, but Bennett defends himself with a chair and knocks the blade away.
Pushing the Doctor down over the altar, he strangles the Doctor.
Suddenly Bennett notices two men, dressed in white tunics.
Frightened, he backs away as they advance on him.
The men wear white tunics and grey layered cloaks over their shoulders.
Bennett tips a chair into their way, but they ignore it.
Relentlessly they advance towards the cowering Bennett.
He reaches the top of the stairs and opens the door.
In his panic, he trips, and plummets from the narrow ledge.
The two men turn towards the Doctor, laying unconscious on the floor.
Their faces are dull and emotionless.
Later, in the TARDIS Ian and Barbara watch over the Doctor.
The Doctor, resting in a chair, blinks groggily.
He leaves the TARDIS.
Vicki is emotionally exhausted, wide eyed.
She turns away from him.
He puts his hands on her shoulders.
The Doctor goes back inside, leaving Vicki to ponder her future.
Vicki enters and looks around in wonder.
The Doctor bends over the console and operates the controls.
The empty rocket.
The two men in white step into the control room.
They destroy the radio.
in the cave, the TARDIS beacon flashes and it slowly starts to fade away.
Inside the TARDIS.
The police-box shape of the TARDIS materialises precariously on the edge of a cliff.
Behind is a rock face and a grove of trees. The TARDIS teeters alarmingly.
They lose their balance as the floor tilts. The TARDIS tips over the edge of the cliff and falls.
Next Episode: The Slave Traders.
The Doctor was played by William Hartnell; Ian Chesterson, William Russell; Barbara Wright, Jacqueline Hill; Vicki, Maureen O'Brien; Bennett, Ray Barrett. Incidental Music by Tristam Carey.
Title Music was by Ron Grainer and the BBC Radiophonic Workshop; Produced by Verity Lambert; Directed by Christopher Barry. Copyright BBC 1965. Independent Audio Description Written by Brett Coulstock.