NEW YORK -- A man on Long Island grew up with a suspicion his entire life that something wasn't right... that maybe he wasn't in the right family. Then, his sister took a DNA test, and those ...

While Kevin McMahon loves his siblings dearly, he can’t help but wonder how his life might have been different had he grown ...

Kevin McMahon's younger siblings were fair, had straight hair, blue eyes and freckles, but he had none of those traits.