"Publication Order #72
Haunted by a shadowy watcher, the Doctor's bound for Logopolis in search of a new chameleon circuit for the TARDIS, with a dangerous stowaway on board.
Now in a new body, and bent on Universe domination, his arch enemy the Master is back with a vengeance. His plan could rock Logopolis, the keystone of all life. Could this mean the unravelling of the causal nexus and the end of the universe itself?
The Doctor must pit his wits against the Master in a desperate battle to t"