Molly Knox Ostertag Books in Order

In Aster’s family, boys must become shapeshifters and girls learn witchcraft, but his talents defy that division. When other boys face a mysterious danger, friendship gives him the courage to use forbidden skills and challenge the rules defining his future.

As Aster studies witchcraft and his family adjusts to his unusual abilities, his nonmagical friend Charlie becomes the target of a curse. Together they must find its source before it harms anyone else, drawing both worlds into danger.

Aster plans to compete openly as a witch at his family’s Midwinter Festival, while Ariel is tempted by dreams promising answers about her past. A sinister intrusion threatens the gathering, forcing both young witches to decide where they belong.

Morgan dreams of escaping her island and conceals her attraction to girls from the people closest to her. After mysterious Keltie saves her from drowning, their growing romance brings both girls’ secrets toward the surface before Morgan feels ready.

Jess and Olivia escape middle-school pressures through a fantasy role-playing game they share. When Olivia wants to welcome new players, Jess struggles with jealousy and change, threatening both their imagined adventures and the friendship that made them possible.

Mags manages family care, work and a dangerous secret hidden in her basement while keeping others at a distance. A childhood friend’s return offers connection, but growing darkness forces her to choose whether revealing the truth is worth the risk.

Olivia enjoys running her friends’ fantasy game, but an expanding club makes her imagined world harder to control. Her older sister’s dismissive comments deepen her doubts, leaving her to decide how much change their adventure and friendship can accommodate.

Tyler’s imaginary friend doubles as his bold role-playing character, encouraging actions he finds difficult himself. After an unexpected confession to his crush becomes school gossip, rejecting that inner companion forces him to seek support and identity among his real friends.