Retired FBI agent and criminal profiler Candice DeLong examines the case of William “B.J.” Liske. On the morning of Halloween 2010, B.J. killed three members of his own family: his father, stepmother and stepbrother. On the surface, it seemed like a random attack. But behind the curtain of a big happy family was a history of turmoil and violence – fueled by a troubled young man with a severe, longstanding and untreated mental illness. Candice explores how the Liske family slowly fell apart, and how B.J.'s behavior and mindset unraveled into the unthinkable.

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