Theresa Knorr: The Mother Who Burned Her Daughter Alive

In the 1980s, Theresa Knorr brutally murdered her two daughters—with the help of her sons.

John List: The Perfect Family Man Who Killed His Perfect Family

John Emil List planned the murders so carefully, he almost got away with it. In fact, it took 18 years to catch him.

10 Terrifying Dads from True Crime Books 

These dads certainly aren't winning Father of the Year.