Season 4 Episodes13
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Ranked #9 of 11 in Season 4•−0.2 vs season avg
The 1999 slaying of a young woman in Germantown, Wis., is recalled.
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"Blood Trail" is episode 4 of Unusual Suspects season 4. It scored 7.5/10 from 14 votes, ranking #9 of 11 episodes this season (season average 7.7). It aired on September 30, 2012.