Cat isn’t happy about leaving her friends for Bahía de la Luna, but her sister, Maya, has cystic fibrosis and will benefit from the cool, salty air that blows in from the sea.

As the girls explore their new home, a neighbor lets them in on a secret: there are ghosts in Bahía de la Luna. Maya is determined to meet one, but Cat wants nothing to do with them. As the time of year when ghosts reunite with their loved ones approaches, Cat must find new courage—for her sister’s sake…and her own.

Raina Telgemeier has masterfully created a moving and insightful story about the power of family and friendship, and how it gives us the courage to do what we never thought possible.