A
book by
John Barnes that brings us a
What If in Ancient Rome
Synopsis: (courtesy of Amazon)Mark Strang is asked to travel far back in time to the period of Caesar and the great Roman Triumvirate, in order to investigate the disappearance of a fellow time agent. What he discovers is that Caesar has been subverted by a Closer representative and that the Triumvirate has been undermined with civil war, mutual destruction, and the rewriting of history looming in the near future.
This is the third volume of Timeline Wars:
Patton's Spaceship (sometimes called 'Crux of Battle')
Washington's Dirigible
Caesar's Bicycle
Point of divergence from our timeline: 49 BC