The book is #25 in the series. The title is The Three Investigators The Mystery of the Dancing Devil. It was published by Random House in 1976.
I believe it is a 1st edition and early printing. There are 25 titles listed on the back cover and has white end papers.
There is a slight separation from the binding on the inside the front cover, along with a written name. Otherwise there is no writing, stains, or torn pages.
There are a few spots on the edge of the pages when the book is closed.
The glossy hard cover is clean with a few little spots and only a little wear. The cover paper is peeling just a little along the spine of the front cover.