The Doctor and Peri discover that Rome has advanced far beyond its natural means, and they must recruit the aid of Ptolemy Caesar to prevent his half-siblings, Cleopatra Selene and Alexander, from waging a potentially world-ending war with each other.
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This was the only novel Bulis wrote featuring the Seventh Doctor, and his next five books were all published under Virgin's Missing Adventures range: State of Change (1994), The Sorcerer's Apprentice (1995), The Eye of the Giant (1996), Twilight of the Gods (1996), and A Device of Death (1997).