Germanicus (A Marcus Corvinus mystery Book 2)

Marcus Corvinus feels his heart sink when he is summoned by Empress Livia. Age has not sweetened her and she's about as trustworthy as a snake with a migraine. But Livia has a way of asking a favour that is impossible to refuse - which is how Marcus finds himself investigating the death of her grandson, Germanicus. And uncovering a multi-stranded web of betrayal and deceit that threatens the imperial succession and even Emperor Tiberius himself.