"Life at the surface isn't a decision that can be made. It's something you have to be chosen to receive. What mermaids lack that humans possess, isn't legs. It's a soul."

Gwendolyn and Emma were best friends.

Until Emma vanished.

Since then Gwendolyn's life has been flipped upside down. She is being troubled by a past that has no answers, a crumbling relationship with her longtime boyfriend, Ryan, and a set of paranoid parents who are afraid to let her go. Curfews and locked windows can keep out harm.

But nothing can stop the urges.

Sudden, overpowering,...