A simple DNA test is all it takes--just a quick mouth swab, and soon you'll be paired with your perfect partner. At least, that was the promise made when scientists found the gene that can determine your ideal match.

"A shock on every other page." --Wall Street Journal

But the discovery has its downsides: test results have led to countless breakups and changed the traditional ideas of dating, romance and love.

"A dark thriller for the Valentine's Day skeptic.'' --The New York Post

Now five very different people have received their match. But "happily-ever-after" isn't guaranteed for everyone, because even soul mates have secrets. And some are more shocking than others...

"Just try to put this gripping thriller down once you pick it up.'' --AARP