Doctor Who episodes broadcast on April 29th

London, 1814. Beneath the frozen Thames, revellers are disappearing where a terrifying monster lurks.

The return of two Doctor Who favourites - Sarah Jane Smith and K9.

The Doctor investigates a London school which is being haunted by strange, bat-like creatures at night.

On a futuristic spaceship, a ticking clock signals the arrival of clockwork droids hunting for a very specific Reinette.

The Doctor and Sondergaard make an amazing discovery in the caves while Jo falls into the Marshal's trap.

An RAF fighter follows the Chameleon plane but it is shot down whilst the plane heads into space