Watch FBI Online: Season 4 Episode 18

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Did OA and the team survive the most harrowing case yet?

On FBI Season 4 Episode 18, things took a dangerous turn when it emerged that deadly sarin gas could have been sold to terrorists.

A New Leaf - FBI

As OA and Maggie tried to save everyone, one of them was caught up in the gas, leading to one of the most shocking scenes yet.

Elsewhere, Isobel pressed on with a new mission that could secure the future of the team.

Use the video above to watch FBI online right here via TV Fanatic.

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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.

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