Jo glanced at the Doctor. ‘Things must be pretty serious then’.‘They are, Jo. Very serious indeed. The whole of the Universe is in danger.’

The most amazing Who adventure yet, in which Doctors One, Two and Three cross Time and Space and come together to fight a ruthlessly dangerous enemy - Omega. Once a Time Lord, now exiled to a black hole in space, Omega is seeking a bitter and deadly revenge against the whole universe...

Katy Manning reads Terrance Dicks’ complete and unabridged novelisation, first published by Target Books in 1975.