Decius Caecilius Metellus the Younger is campaigning for an election he is almost certainly expected to win when he is accused of corruption and extortion during his time on Cyprus. The next day his accuser is found murdered and since Metellus is the obvious suspect he needs to clear his name before the election.
An interesting if rather complex plot line but Metellus's narrative voice is not as humorous as in the earlier volumes.