As with many short story collections, this is a completely mixed bag - so I'll briefly share my thoughts and rating for each individual story.
Moon Kill by Patricia Windsor
A teenager's friend is murdered one night. Who is the killer, and will he strike again? A fairly straight-forward mystery that leaves some ambiguity at the end. I liked the writing of this one and the story managed to build some creepy atmosphere. ~ 3.5 / 5
Girl at the Window by Richard Peck
A boy (age, name, ? - went back to look and couldn't find either in the story, lol) and his mother move into a new home. A strange teen girl climbs through his bedroom window at night. Who is she and what does she want? Hard to say much else without giving anything away, but I liked this one. ~ 4 / 5
The Dark Beast of Death by Joan Lowery Nixon
A teen girl makes some bad choices and gets wrapped up in a gang. Of course, bad things happen and she ends up paying for her decisions. Didn't much care for this story, although it was a bit darker and more violent than the previous two. ~ 2 / 5
The Bogey Man by Annette Curtis Klause
A young boy is warned by his grandmother NOT to go in the basement because of the "Bogey Man". Of course, his curiosity gets the best of him, but what's lurking down there is far worse than the well-known mythical creature used to frighten children. I really like this one. Very brief, but has some darker implications to it and some might even find this one a bit offensive. A great, creepy story. ~ 4 / 5
The Beautiful Thing by Harry Mazer
Some trouble-making teens are bloodthirsty and want to get their hands on a gun. They do. Nothing else happens. *Yawn* ~ 1 / 5
The House on Buffalo Street by Norma Fox Mazer (Harry Mazer's wife)
A teen girl and her mother move into a new apartment. Said teenager starts hearing a strange voice coming from the landlord's apartment and starts imagining strange and frightening possibilities. Who does the voice belong to? Unfortunately, the big reveal isn't so exciting or thrilling. Still, enjoyed this one slightly more than her husband's story. ~ 2 / 5
Satan's Shadow by Alane Ferguson
A teenager's friend confesses to murder. Troubled by this information, she goes to the police, and then discovers that she may have made a mistake in doing so. I really dug this one! While the execution might not be perfect, this one has an interesting concept and raises the questions: When is it okay to kill? Is murder ever acceptable? Are there times when murder should be forgiven? A surprisingly dark and heavy story. Despite what the title may imply, there's no supernatural occurrences here. This is a grounded suspense/drama. But I loved it. Possibly my favorite of the collection. ~ 4 / 5
The Monkey's Wedding by Joan Aiken
I think this one was about a famous painting being fought over by various people. I don't know, this one barely held my interest. ~ 1 / 5
The Grind of an Axe by Theodore Taylor
A distant relative of viking descent comes to visit a family. He's mysterious and intimidating. Who is he really and what does he want with his distant relatives? Again, hard to tell much about these without spoilers. This one I didn't much care for. It was simply okay. ~ 2 / 5
The Chosen by Madge Harrah
I feel like I should have enjoyed this one way more than I did. It involves snakes, ancient gods/goddesses and evil rituals. Sounds awesome, right? Right. Well, whether it be the style of writing or the execution of the idea (perhaps a little of both), this one just didn't work for me. Still, not too bad. I liked the concept and the content of the story. ~ 2.5 / 5
Bearing Paul by Chris Lynch
This one is a bit unique. The story is told from the first-person perspective of a troubled teen ruminating over his recently deceased friend. The main character's "voice" offers a narration style that is both strange and a bit intriguing. He ponders over the possibility that maybe his friend isn't dead after all, when he thinks he sees him move during the open-casket funeral. What is going on with his dead friend, and what is going on inside of our protagonist's mind? This one is more psychological horror than the other stories and leaves some things open to interpretation, although the primary meaning seems clear. I really liked this one, although the narration was a bit repetitive at times. Possibly in contention with Satan's Shadow and Bogey Man as my favorite story of this collection. ~ 4 / 5
Overall this was a decent little collection of stories. They are all very brief and most are simplistic, but there is a nice variety here in terms of storytelling and content. I think most people would enjoy at least a couple of stories from this collection. Overall rating for the book is a 3 / 5.