Overview
The Kraal invasion reaches the real Space Defence Station as android duplicates replace key personnel, including an artificial copy of the Doctor himself.
ASFR Content
Part Four contains multiple duplicate reveals and a mass android shutdown. The Doctor discovers that several UNIT personnel are artificial replacements, has the station's radar reconfigured to disable the androids, and secretly reprograms his own duplicate. Styggron shoots the apparent Doctor, only for the real Doctor to emerge and reveal that the 'victim' was the reprogrammed android double.
Image Gallery
ASFR Scenes
The Doctor's android duplicate activates
A pod aboard the Kraal rocket opens to reveal a complete artificial duplicate of the Fourth Doctor.
UNIT personnel are exposed as android replacements
The Doctor discovers that familiar figures at the Defence Station, including Benton and others, have been replaced by human-looking android copies.
The radar signal disables the androids
The Doctor has the station's radar realigned and activates it against the Kraal duplicates, shutting down the invasion force.
The Doctor reprograms his own duplicate
The real Doctor secretly turns the Kraal copy to his advantage and sends the artificial duplicate against Styggron.
Styggron shoots the duplicate and the real Doctor reveals the trick
Styggron shoots what appears to be the Doctor; the real Doctor then emerges, proving that the damaged figure was the android copy.