This is a quite dark and complex Christmas murder novel. I think it's a sort of homage to the complex puzzle of Golden Age mysteries and it uses some of the GAD trops delivering an original and gripping novel.
We are used to think as Golden Age mystery as light and cozy forgetting that some of them are quite dark and the families are usually dysfunctional.
The characters are not likeable, I wouldn't be happy to spend time with them. Lily, the MC, is damaged and still grieving the death of her mother.
Other characters are simply nasty but all of them are fleshed out.
I wasn't able to solve the puzzles but I found them fascinating.
The mystery is solid and, even if I guessed some twists, it kept me reading.
There are some repetition and some less repetition of how Lily is feeling would have helped.
Recommended.
Many thanks to the publisher and Netgalley for this ARC, all opinions are mine