An exciting novelisation of a classic TV adventure for the Fourth Doctor, as played on TV by Tom Baker, featuring the Master. For ages past, the Union of Traken has lived in peace and harmony thanks to the power of the Source, controlled by generations of Keepers. But the current Keeper, his powers waning, senses some all-pervading evil about to invade his world. He summons the Doctor to his aid. To save Traken the Doctor fights the terrifying Melkur - only to find that this new enemy conceals an older and even deadlier foe - one the Doctor has encountered before... Geoffrey Beevers, who played the Master in the TV series, reads Terrance Dicks's novelisation of a 1981 TV serial by Johnny Byrne, the penultimate story of the Fourth Doctor's era. Running time: 2 hours 55 minutes (P)2020 BBC Studios Distribution Ltd © 2020 BBC Studios Distribution Ltd Cover illustration by Andrew Skilleter Novelisation copyright © Terrance Dicks 1982 Original script copyright © Johnny Byrne 1982 Reading produced by Neil Gardner Recorded at Ladbroke Audio Ltd Sound design by Simon Power for Meon Productions - www.meonsound.com Executive producer: Michael Stevens