How can a blood supply be hacked?
That's a big question on Scorpion Season 2 Episode 19 as a Los Angeles blood supply is hacked and subsequently found unusable.
Not helping matters is that a young girl is in dire need of blood, but with the supply unusable, she's in big trouble.
The team came together to go try and find the perpetrator, but with limited leads, they don't know where to look first.
Will they crack the case of the missing blood supply?
Use the video above to watch Scorpion online to get caught up.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.