Court records from the early 1990s reveal concerns about Josh Powell nearly two decades before his wife disappeared in 2009.
The records, part of his parents' divorce proceeding, show that Josh's mother worried about her son's potential for violence.
Terrica Powell wrote at the time that she "felt extreme fear when Josh made a threat with a butcher knife in his hand."
She also recalled how Josh killed baby hamsters by throwing them against the side of their cages.
And she said Josh's father, Steven Powell, "has totally stripped away all respect in Josh ... for fidelity in marriage and loyalty to one's spouse."