The Mer Chronicles (Stevens)

Since her father died, Kate Sweeting's home life has been in the pits, her well-being on life support. Her future looks desolate until she and her mother, Cara, make another plan: abandon their shriveled existence for more promising prospects on the coast, where Cara can play small-town librarian-bachelorette, and Kate can figure out what's up with that secretive Blake family from the beach.

The sirens of Griffins Bay are in trouble, and the recent slew of royal suicides looks to be the least of their worries. For one, unless a blood relative of the queen shows up, no one's around to staff the monarchy. Well, except for a whack-job bureaucrat and he seriously won't do. Worse is the community unrest threatening siren society, a problem caused by too many humans in the pool, which means Simon and his off-limit girlfriend will have to run and hide if they want to make more of their flirtation....

"Falling, falling.... Maya was airborne again, suspended between a landless platform above and an inscrutable expanse of water below." Maya's headlong rush into marriage isn't working out...and it isn't the only collision course she's on these days. Her saltwater distractions aside, her father-in-law wants her gunned down for reasons unknown, and her pesky bodyguard - when he's around - seems intent on drowning her in want and regret.