I read Fablehaven with my mom and brother. There's these two kids, a girl named Kendra and the boy is Seth. Anyways, there parents took them to there Grandma and Grandpa's house. There's a witch who lives in the forest. Shes on the cover.
There was a Summer Solstice. On Summer Solstice TONS of monsters attacked. That's my description. Mythological, magical, awesome, EPIC, and yeah.