Threads by Jim Jameson

A novelette about a set of triplets whose mother died in childbirth and were given up for adoption.  Their father has passed away, a billionaire, and now they’ve inherited his business empire and his private island.  But all is not perfect in paradise.  Unbeknown to the triplets, they have already met before during a spring break.  The brother met one sister at a beach party with a promise to meet again at a nightclub.  He met the other at a strip club in between, and mistaking a stripper for his potential date, he gets her alone.  She gives him a lap dance he’ll never forget, but her voice is different.  He goes to the party and meets the first girl.  They end up spending the night together.  When she leaves the next day, he kicks himself for not finding out how to contact her again.  Now, they’ve been united upon their father’s death with the guilt of incest once they find out they’re siblings.  But that’s not all folks.  It turns out the island’s architect and manager has been using secret cameras all over the island to gather secret tapes of the various island’s visitors and their picadilloes.  Now he has tapes of the siblings talking about what happened three years earlier.