Wrexford & Sloane regency mystery by Andrea Penrose. Due out 29th Sept 2020 from Kensington, it's 368 pages and will be available in hardcover, audio, and ebook formats. It's worth noting that the ebook format has a handy interactive table of contents as well as interactive links. I've really become enamored of ebooks with interactive formats lately.
This is an engaging and well written addition to the series. It's an ensemble character driven cozy(ish) historical murder mystery with a strong element of romance. The author has written the story around a framework of fictionalized historical characters (two of my favorites from real life - Charles Babbage and Ada Lovelace) and does a good job of interweaving the historical facts with the fictional narrative allowing for some minor poetic license regarding names, dates, and times.
Although self-contained in the narrative arc, the cast of characters have a long history together, so it works well enough as a standalone, but I strongly recommend reading the series in order because of character development spoilers. The language is very clean, there's some violence used in context, and no sexual content.
Enjoyable cozy murder romance. Four stars.
Disclosure: I received an ARC at no cost from the author/publisher for review purposes.