Did everyone survive a mysterious disease?
That was the big question on Blindspot Season 4 Episode 4 when it emerged that the disease was in the FBI originated from one of the tattoos.
With little in the way of information about what was going on, Jane and Weller had to work together while Patterson and Rich scoured the internet for answer.
Also, a surprising new threat to Jane appeared with the aim of shaking things up inside the FBI.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.