10 Even MORE Doctor Who Episodes You Didn't Know Were Connected

10. Frontier In Space & Bad Wolf

In Frontier in Space, the Third Doctor is accused of espionage and gets sentenced to hard time in a penal colony on the Moon. This is in the 26th century, where the Lunar Penal Colony is reserved for political dissidents and spies.

Of course, the Doctor immediately tries to escape, with assistance from Outer Space Jeremy Corbyn impersonator, Professor Dale.

The Doctor's escape plan fails when he's double-crossed by an appropriately-named fellow inmate, Cross. However, despite this scandal, Earth appears to continue imprisoning people on the Moon for millennia, long after Frontier in Space.

That's because, in the Ninth Doctor episode Bad Wolf, it's revealed that the Lunar Penal Colony is still in operation in the year 200,100.

When the Ninth Doctor, Lynda with a Y, and Captain Jack Harkness try to bust Rose out of the Game Station, they're swiftly detained by guards. The charge for blowing up Trinny, Susannah, and Anne Robinson? Imprisonment in the Lunar Penal Colony, which is mentioned by one of the guards while the Doctor is in a holding cell.

Learning from experience, this time the Doctor makes a bid for freedom before he gets sent to the Moon, preventing Doctor Who from being turned into a drawn-out prison drama. Nice one.