3.5 upped to 4
The Thirty-One Doors is a mix of Golden Age tropes with some gothic novel tropes. It's a slow burning and gripping novel featuring complex characters and an intriguing setting.
There're secrets, murders, an isolated mansion with plenty of very modern features and a trouble investigators.
It's not an action packed or fast paced story, it's one that ask you to concentrate on the puzzle and follows the clues.
I found it a bit too slow at the beginning and some parts requires a bit of suspension of belief. Once I was involved in the story I enjoyed it and try to identify the clues and solve the puzzle.
There's plenty of potential and i would be curious to read the next mystery by this author.
Many thanks to the publisher for this arc, all opinions are mine