Trish Morey 
His Prisoner In Paradise [EPUB ebook] 

Imprisoned…and pleasured! Merciless Daniel Caruana will do anything to prevent his sister marrying his nemesis! It just so happens that her wedding planner is the groom’s sister — and in the flesh, despite her prim clothes, Miss Sophie Turner is very tempting. An eye for an eye, a sister for a sister…Daniel will have Sophie exactly where he wants her — trapped on his private island and willing in his bed! But when Daniel realises that true love does exist, it’s not just his sister who’s in trouble…