Charlie Dryden and the Stolen Roman Standard

The seventh book in Carol Dean's Charlie Dryden Series.It was bad enough that Charlie Dryden and his family had their day at the Roman museum spoilt because someone had decided to steal the Roman Standard of the Fourth Cohort, the Signum, found recently in a farmers field.But little did Charlie know that he would soon become involved with the quest to retrieve the Signum, bringing honour back to the Fourth Cohort, and the thieves to face justice. With the help of his new friend Atticus Marcus Lucius that is.