Paradise of Shadows and Devotion — Gaja J. Kos

Hunted for her present. Haunted by her past.

 As a mermaid stranded on land, Liana's only goal is to survive this new world and not succumb to the call of the sea -- unless she wants death to find her a second time.
 Her struggle takes a turn for the worse when a PI tracks her down to the small cafe in Piran where she sought refuge. Her dashing Italian boss offers her a way out of the clutches of her past. In exchange for her honesty. 
Revealing the taint of her previous life to Santino is terrifying enough, but with her lethal nature and the attraction brimming between them, growing close could become dangerous. Especially as she realizes there is more to him than meets the eye.
 With Santino's aid, Liana just might overcome her darkness. But will she be able to accept his?