The Doctor is accused of murder at the far future Museum of Aural Antiquities, where the personal recordings of the late actor-turned-politician Visteen Krane have been stored. A pair of mercenaries break into the Museum after hours, intending to alter Krane's recordings. But why?

When the killings begin, the local police find two very obvious suspects who cannot account for their presence in the museum, and the Doctor must not only prove their innocence, but uncover the real murderer and his highly unusual modus operandii...

This story takes place between "Revelation of the Daleks" and "The Trial of a Time Lord".

Starring Colin Baker as The Doctor