Police race for answers after an adored school teacher is found dead in her San Antonio apartment. A string of lies and betrayal comes to light, but when the case goes cold, one detective refuses to give up.

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.