The Trick of The Treasure reminds me a lot of Nancy Drew or the Hardy Boys in that, while it definitely has an overarching plot and developments, I didn't have any trouble hopping in here instead of at the beginning. The book is succinct in a very well done way, providing just enough details for you to fully understand the character's opinions/perspective but nothing more, and the characters themselves are well done. Unfortunately, the bread and butter of the book, the mystery of the missing treasure, is executed in an incredibly boring manner. Our main character's primary and seemingly only method of gathering information is to go and interview somebody, who gives them a name, so they go interview that person, rinse repeat. I think that there's a lot of potential with the series, but the repetition of the interview process, and the almost complete lack of any other kind of investigative measures, makes it a dull read, just good to pass the time.

(Additional details are provided in the link, but that contains spoilers, so be warned.)

Constance and Solomon have a person and professional partnership.
As they run their investigative agency, they have to come to grips with how to proceed with their engagement.
They are hired to find a treasure but it is often hard to decipher the clues in between the lies.
Solomon is also searching for his twin brother from whom he was separated many years ago.
Constance at times cannot believe how lucky she is a in love given her past and present.
Sweetly subtle and always tugging at my heart.
Enjoyable read, addictive series.

Struggling with the novelty of their engagement, Constance and Solomon are delighted to dig their teeth into a new mystery, the vanishing of a treasure hoard from a locked strong room. The treasure, only just brought home by adventurer Barnabas Lloyd, was supposed to pay off his debts and rebuild the family’s finances.
The fourth book in this brilliant series, whilst it could be read on its own, Solomon & Constance’s relationship has changed, grown & deepened so to fully appreciate this book reading from the start is my recommendation. I love both Solomon & Constance & love how they bring out the best in each other & how he really does treat her as a true partner. The case is intriguing, there are twists & turns, the suspects aren’t exactly forthcoming with the truth either, which leads to misassumptions. There’s also a surprise for Solomon, which I’m sure there will be more about it in later books. A very well written mystery with more than a touch of romance & I can’t wait to read the next instalment
I voluntarily read and reviewed a special copy of this book; all thoughts and opinions are my own

Starting just at the end of book 3, we find Constance and Solomon dealing with the aftermath of their decision when a new client asks for their help in solving the mystery of a stolen treasure awakening their curiosity.

While they both get to know the family of the adventurer, they start to unravel pieces and bits from the past of the Lloyds and they also stumble on a possible mystery of their own.

The culprit was really well hidden and the story wonderfully crafted, I am liking both Constance and Solomon more and more and their romance is really tactfully depicted, in stark contrast with our leading lady perceived occupation.

I received an advance copy for free and I am leaving this review voluntarily, thanks to the author for it.

Major mistakes!

Several typos - Constance is mentioned as Constant, Rachel as Rached.

Also there are story errors:
1) Our leads keep mentioning that Audrey told them about visiting Clarke's sister. The error is that she never does. It is Clarke himself who mentions his sister Hetty.
2) Constance also points out that they told a certain person about a certain alias which may have prompted them to commit murder. The error is that the murder already happened before they relayed any information. So Constance and Grey's theory regarding motive makes no sense.

But having said that, 50+ books in, Mary Lancaster is an automatic buy for me. Though I am not a huge fan of this series, I love Ms Lancaster's writing and hence have continued with it. I have to say, romance-wise, this book is the best yet. I finally warmed up to Silver & Grey. They spend a lot of time talking through their feelings in this one, and I am finally on-board. Mystery-wise, the entire series of events is tragic and while I thought the villain was someone else, the final reveal does make sense.

Constance and Solomon are tasked with finding out what happened to the treasure inside a chest in a locked strong room. As they make their way through the many suspects, they must also become comfortable with their own engagement. This was a great mystery, and I can't see what is in store for them in the next book. I received an ARC from NetGalley and Dragonblade Publishing for my honest review.

Okay, so I didn't know a Regency romance murder mystery was something I needed, but I needed it. How refreshing- a glorious reminder of why I love the Regency genre in the first place.