As dead bodies start washing ashore, Lily and Calder realize someone's on a killing spree--and they fear it's either Calder's mermaid sisters or Lily's father.
"Rudy's life is flipped upside-down when his family moves to a remote, magical island in a last attempt to save his sick younger brother, Dylan. While Dylan recovers, Rudy sinks deeper and deeper into his loneliness"--Provided by publisher.
While on vacation in Scotland on her tenth birthday, Zeta meets a wise, kindly old merman who teaches her not only to swim, but also many, many more fascinating things.
Fourteen-year-old Riko manages to get her delicate older sister Sif and herself to their remote Pacific island home, where an American scientist who falls in love with Sif and discovers her connection with an underwater race creates complications in Riko's life.
As they search for their missing father near their Cornwall home, Sapphy and her brother Conor learn about their family's connection to the domains of air and of water.