This book is a good, solid collection of CoC scenarios. I bought it mostly for Seth Skorkowsky's A Mother's Love, which is one of the better scenarios in the book, though it does have some typos and it's a bit shorter than I would have hoped. The two Kingsport scenarios, Malice Everlasting and The Night War, are both fantastic, with The Night War in particular being one of the most unique and interesting CoC scenarios I've ever read. The remaining scenarios all average out to be pretty good, except for Spirit of Industry, which I just plain didn't like. It's just too slow-paced and relies too much on NPCs accompanying the investigators everywhere for my taste.
I really appreciate how all of the scenarios explore the history and details of the towns in which they take place, almost treating the town as a character in the story. There's definitely a healthy respect for and knowledge of Lovecraft's work on display here. If you need some more 1-3 session scenarios for CoC, this book is definitely worth considering.
It's worth noting though that Proof of Life and The Night War contain some pretty intense and graphic scenes, so you probably shouldn't run those two with younger players.