Review based on the version included in "Audio Adventures in Time & Space, Collection One."

Republica offers a solid "What if" story.
Mark Gatiss delivers a script that’s both clever and tightly constructed. The pacing is just right, keeping you invested from start to finish.

The cast delivers strong, believable performances.
Even though it’s a story about the Professor and Ace—with no ties to Doctor Who ;) —it holds its own alongside any Sylvester McCoy and Sophie Aldred Doctor Who story by Big Finish.

The resolution is nicely done. For a seasoned connoisseur of time travel stories, it may feel like standard fare in some ways, but it comes with a moral twist that would fit just as well for the Seventh Doctor as it does for the Professor.

Overall, this is a very well-made audio drama. Definitely recommended.