This is a prequel to the Wicked Earls' Club series. It gives a little insight into the series and introduces some of the characters. I enjoyed the glimpse as to the Earl of Coventry's plans. It is not necessary to read this before reading the Wicked Earls' stories, but it does show some of why they happen. I read one of the books before this one and this did explain where these Earls began.
This is my unsolicited review.