The year is 300 CE. You are Antonius, a Roman diplomat summoned to Camulodunum. The governor suspects a murder plot and needs your help. Four conspirators, a poison, and a body disposal plan are hidden across Britain's oldest recorded town.

Solve 10 puzzles at Roman landmarks. Count chariot gates at Britain's only Roman Circus. Decode clues at the largest surviving gateway. Spot a hidden rose in a 1,800-year-old mosaic that reveals the murder weapon.

Download the Questo app, activate with your booking code, and start at Butt Road Car Park. No guide needed, just your phone, clues and a map in the app. Play as a team of up to 3 or solo.

Discover why Claudius may have arrived on a war elephant, where a secret cult worshipped underground by oil lamp, and how a mosaic was once a Roman status symbol bigger than any sports car.

About 80 minutes, 10 stops, 3.5 km across Colchester. Available 9am to 4pm. Perfect for history lovers and mystery fans exploring a Roman assassination plot.