Creep stories, many of them are downright scary and made me stop reading for some minutes because of the plot, so I had time to process and cancel the image of my mind. The one about Jack O' Lanterns made of people's head was... gruesome.
But they serve their purpose of being scary in Halloween, and they were well written. It does not matter that you know that something bad is going to happen, or that is easy to identify the villain of the narrative, because the events following each case is enough to make you squirm in your seat.