Twilight of the Gods by Christopher Bulis

Twilight of the Gods is a Doctor Who novel featuring the second Doctor Who as he returns to the Web Planet after his last visit many years ago.

The Web Planet is very different to how the Doctor remembers, much has changed and the world is now in the grips of a fierce interplanetary war between the opposing factions of a divided race.

To restore peace, the Doctor must first resolve a deadly ideological conflict, solve the paradox of the nature of life on Vortis, and finally confront the Gods of Light themselves.

As the stakes are raised, can the Doctor contain the ancient terror that threatens to devastate an entire star system?