"the houses should be empty, the owners are living in a retirement community," lori tells cav. he wonders if the elderly owners might be confused about the status of their homes, but lori is adamant that the seniors are old not senile. might not be as critical as stopping the monster who is attacking vagrants, or catching the gang robbing check-cashing shops, but the problem is curious, and squatting is illegal, so, he and his deputy investigate. they observe vehicles drive into the first house, stay a few minutes, and drive out. they hear machinery in the barn at the second house, a car half hidden behind the structure. they watch a young woman water plants at the third house while her baby plays on the porch. cav doesn't expect the investigation to become deadly, but deputies assigned to watch the buildings identify a cop-killer at one home and drug-making equipment at the barn. cav teams up with both dea and the fbi to take down a multi-state drug running ring.