When fifteen-year-old Peer Ulfsson witnesses the disappearance of his neighbor's wife, rumored to be a seal-woman, he must help protect the baby she leaves behind from trolls, a witch, and other creatures.

During the summer of 1988, Allie Jo, whose family runs an antebellum Florida hotel, meets Chase, who is staying there with his father, and they become friends when they discover a mysterious teenager hiding on the grounds of the hotel.

One dark December night, in a small seaside town, a little girl is found abandoned. When her mother finally arrives, authorities release the pair, believing it to be an innocent case of a toddler running off. Gregor, a seemingly single man, is found bludgeoned and left for dead in his apartment, but the discovery of children's toys raises more questions than answers. Every night, Ruby gazes into Gregor's apartment, leading to the discovery of his...

Brigit, a girl with selkie heritage, embarks on a perilous journey with newcomer Peter to confront the Great Selkie in Sule Skerrie in order to prevent a curse that threatens her village's safety.

"Magical beings have been banned from the Golden City for decades, though many live there in secret. Now humans and nonhumans alike are in danger as evil stalks the streets, growing more powerful with every kill. It's been two weeks since Oriana Paredes was banished from the Golden City. Police consultant Duilio Ferreira, who himself has a talent he must keep secret, can't escape the feeling that, though she's supposedly returned home to her people,...

Fifteen-year-old Jenn McDaniel's life on Whidbey Island becomes more complicated and her relationships with old and new friends take strange turns, partly due to the arrival of a woman researching a strange black seal.

Ben, a ten-year-old Irish boy, discovers his mute sister Saoirse, whom he blames for the apparent death of his mother, is a selkie who has to free faerie creatures from the Celtic goddess Macha.