15-year-old Elizabeth Ennen was last seen when a friend dropped her off at home. Her distraught mother Virginia says she never walked through the door. Police are baffled until they uncover a piece of CCTV that turns the case in an unexpected direction.

Mother of two Nikki Whitehead is brutally murdered within her own home. Police suspect she may have known her killer. Polygraphs and CCTV footage help reveal the unexpected and horrific truth.