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'FBI' Sneak Peek: Maggie Tracks Her Sister's Whereabouts on Her Phone -- and OA's Disturbed (Exclusive)

An all-new episode airs Tuesday, April 20 at 9 p.m. ET/PT on CBS. After a man is killed by an explosive package shipped to his home, the team attempts to capture the sender and intercept his latest deadly parcel. Also, Maggie (Missy Peregrym) tries to trust her younger sister, Erin (Adrienne Rose Bengtsson), is truly staying out of trouble as a new college student in New York City.

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