The Roman Mysteries: The Charioteer of Delphi: Book 12
Caroline Lawrence
September AD 80. Flavia and her friends go to Rome to celebrate the Festival of Jupiter at Senator Cornix’s town house. When a famous racehorse goes missing, Nubia sets out to recover it. The four friends find themselves caught up in a plot against one of the rival factions, the Greens. Who is trying to sabotage the charioteers? Could it be an inside job, or someone with a grudge from long ago? And how many men and horses will die before the killer is caught?
Reviews

They come first place
Anonymous 31.07.2023

good
Senor Crocodile Spinner 06.07.2023

A good read
Lady Fandango Mystery 23.08.2021

When Flavia, Jonathan, Nubia and Lupus are called to Rome to find a race-horse called Sagitta, they are allowed to stay with the Greens. When they find Sagitta almost immediately, Jonathan knows something's not right. Finding mysterious clues and fun races, they try to solve another mystery. I recommend this book.
Marshal Cupcake Starlight 25.08.2020

It was a bit sad how many horses died but other than that i thought it was pretty good. I liked the plot twist were it turned out the beggar man was actually a super rich evil murderer who was killing his old teammates for revenge. I liked how Nubia had a sort of connection with the horses. It was really cool that Flavia, lupus , Johnathon and Nubia got to have a go on the chariots. I'd love to have a go on a chariot, even though it sounded terrifying.
Countess Petunia Flattery 01.07.2020