Stranded with My Forbidden Billionaire
Publisher: Harlequin Mills & Boon, Limited
Published: 2022
Language: eng
ISBN-13: 9780008921644
First sentence: IF SOMEONE HAD told me six weeks ago that, come November, I’d be aboard a speedboat jetting towards Nick Morgan’s private island in the Indian Ocean, five thousand miles from my flat share in London, with the intention of requesting his help, I’d have stared at them in astonishment and asked what they were on.
Description: First, she needs his expertise. Then she’ll test his every boundary…in this enemies-to-lovers romance by Lucy King!  My heart is off-limits… …but our attraction is off the charts! My brother’s best friend, Nick Morgan, has always hated me. Then I won millions in the lottery. As my past has left me with no one to trust, superrich financier Nick’s the only person I can rely on to help me. And he’s demanded I join him in paradise…on his Indian Ocean island! But no sooner I arrive than a tropical storm has us stuck together—indefinitely! My awareness of the hostility between us that’s kept Nick out-of-bounds morphs into a dangerously irresistible desire that I never saw coming…   

She wins lottery, visits Nick's island, she spends a week in Zanzibar, 
He brings her back b/c her lottery win leaks out.
Storm hits island and light go out... ooh la-la! 
That twist in chapter 11,  sweet!