In a brand-new jailhouse interview, Sabrina Zunich tells the chilling story behind her foster mother's murder and describes the salacious secrets that led to it. In her own words, she details why she snapped and how she feels about it now, behind bars.

When a devoted father is found brutally stabbed to death in his Deltona, Florida, home, detectives turn their focus to the picture-perfect family who appear to have it all.