Who is the real Abby Scuitto? We're about to find out when her brother comes to town.
After Abby volunteers to donate a kidney on Tuesday's NCIS
, she learns a few shocking family secrets. "It affects Abby in a huge way," Pauley Perrette
tells TVGuide.com."It's a very, very big deal, and it will absolutely impact her for the rest of her life."Fall Preview: Get scoop on all your favorite returning shows
Abby's brother, Kyle Davis, is played ...