The Daily Mail can exclusively reveal how New York City swimwear designer Martha Nolan-O'Slatarra died in the Hamptons last week.
Sources say 33-year-old Martha headed to the ritzy Montauk Yacht Club on the evening of August 4 to speak with insurance mogul Christopher Durnan, 60.
Durnan - a guitar-playing widower linked to several boats named after Grateful Dead songs - is believed to have invested more than $200,000 in the Irish beauty's bikini boutique.
But their meeting ended in horror when he dashed down the dock naked around midnight screaming for help and indicating that Martha had passed out.
Bystanders dialed 911 and clambered on board a boat named Ripple to try to revive the blonde, blue-eyed fashionista.
