The Emerald Lei — Susanne Bellamy

Eva Abbott sells her inheritance in England, Bellerose Manor, to provide for the care of her nephew. She buys a pineapple plantation in Hawaii but discovers her neighbour, Luc Martineau, will do anything to take it from her. 
When Eva discovers a diary which may solve their financial problems, villains follow her to Hawaii and attempt to force her to reveal the whereabouts of the heirloom emerald necklace.
Is Luc an ally or an enemy? Is he after Eva or her land?