Johnny Tapp, the principal of a high school, explains why he suspended the abstinence only program for a program that encourages the students to have sex; David Alan Grier learns the shocking truth about his family tree; Terry Slater is interviewed, a man who does reenactments of a slavery uprising; Laron and Dan Wainscott-Merkeson are profiled, conjoined twins, one Caucasian and the other African American. (thetvdb.com)