Casefile True Crime

Case 140: Richmond Hill

Mar 28, 2020
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INSIGHT

Neighborhood-Shattering Explosion

  • A massive explosion rocked Richmond Hill at 11:10pm on November 10, 2012, damaging dozens of homes and killing Dion and Jennifer Longworth.
  • The blast registered on earthquake sensors and left the neighborhood in chaos with shattered houses and displaced residents.
ANECDOTE

Destroyed Home While Owners Were Away

  • Montserrati Shirley's home was obliterated while she and Mark Leonard were away at a casino weekend.
  • Investigators found the microwave door blown off and a metal cylinder ejected, indicating internal pressure before the blast.
INSIGHT

Evidence Of Intentional Tampering

  • The fireplace regulator had been replaced with a black pipe and the on/off switch removed, allowing uncontrolled gas flow.
  • Concrete tested positive for gasoline in multiple locations, supporting deliberate sabotage.
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