This book has the same characteristic as the rest of Todd's Claudia series - it is pretty terrible, as a piece of writing. It's not going to win any literary prizes here. The author and her creation are self-indulgent, and it is easy to see the books as a personal fantasy - Claudia is highly unrealistic, with looks which have snared half of Rome and a temper endured by the numerous overweight, middle-aged men when she seems forced to entertain and her over-principled, smitten admirer Orbilio, with whom she engages in a number of titillating and ridiculous adventures. Every novel ends up with her naked, in the grip of the serial killer, with Orbilio close by - ready to run in and be assaulted.
I say this to you with the sad confession that I own the entire series, and have pre-ordered the upcoming Second Act. I started my collection with this book. It really is guilty pleasure, compulsive reading despite dialogue which will make you cringe. You will find sympathy for the characters despite and because of their absurdity, and like most murder mysteries, it's always worth hanging on for the end. It is also a particularly evocative novel of the era - details in the books reveal some depth of research and knowledge of Imperial times. This does not disguise or excuse its faults, and I can't quite bring myself to recommend it to you, but if you're aware that you've been hooked onto this kind of novel before then it is worth the read.