Seventeen year old Jo Greer's been having nightmares since her Hanni, her grandmother, died a year ago, and all summer they've been getting worse--so much worse that now she's sometimes unsure what's real and what isn't. While helping with her cousins' annual Harvest Faire, she loses track of an entire morning. When her friend Aidan shakes her awake, she finally admits how bad it's gotten and how terrified she is. A few minutes later her friend Young Tom seems to change for a moment right before her eyes, and soon he starts her on a quest to unravel the mysteries about her grandmother's death, her father's disappearance, and her self. Oak and Mirrors is a YA fantasy that straddles the line between novel and novella at 40,000 words and is also middle grade friendly.