The end is nigh as Scott and guest host Michael Nixon see the signs in the Tom Baker 4-part serial “Logopolis”. The Doctor and Adric go to the planet Logopolis in order to finally fix the TARDIS’ chameleon circuit, but not before the Master gets involved with his own plans for the planet of mathematicians. Can the Doctor stop his old enemy before it’s too late? Who is the young woman who accidentally stowed away on the TARDIS? What in the world is the Watcher anyway? Find out in the latest episode of The Doctor’s Companion! And remember, BEWARE OF SPOILERS!!

NEXT: David Tennant and “New Earth”!!