Timewyrm: Genesys by John Peel
The novel “Timewyrm: Genesys” by John Peel was published for the first time in 1991. It’s No. 1 in the “New Adventures” range by Virgin Publishing.
The Seventh Doctor is trying to sort out his memories, but accidentally erases Ace’s. He manages to fix them, more or less, but during the operation, he triggers a message from the Fourth Doctor, who mentions a mythical creature known as the Timewyrm. After the Doctor finishes restoring Ace’s memories, the TARDIS lands in ancient Mesopotamia.
A clash between two spaceships causes damage to both. A woman with cybernetic implants manages to land near the city of Kish. Gilgamesh, the king of Uruk, is trying to spy on his rivals in Kish, and the woman tells him she’s the goddess Ishtar and seeks his help. Gilgamesh refuses, and she vows to take revenge on him by exploiting the inhabitants of Kish and their devotion to Ishtar.

