airdate: October 14, 2009
written by: Chris Mundy
directed by: Felix Enriquez Alcala

• When the team revisited how the violence began, they realized the first home invasion wasn’t their first murder. They traced back to the townhouse that had been trashed and realized all but one room was destroyed. They knew the key to the first murder was buried within the walls. This lead them to the three unsubs.

• Who dunnit and why?

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