This documentary got me hooked within minutes. Stepping into this family's private life with only original police footage and personal homevideo's gave the most realistic image to start a horrific story. The mystery surrounding it made me feel instantly anxious of the outcome. The tension rises to unbearable levels until the climax hits. I wouldn't recommend this to young parents or anyone who likes to sleep right after watching this, because I won't for some hours... that's for sure.