Fair rating?River Monsters· Season 8 · Episode 5
Invisible Killers
Jeremy Wade has hunted down freshwater killers for 30 years, but those waters are infested with darker, deadlier creatures - parasites.
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#3In Season 8of 5 rated episodes
#3All-timeof 6 rated episodes
−0.2vs season avgSeason 8 averages 8.2
2016First airedMay 12, 2016
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