The Blacklist - Season 5, Episode 10: Soundtracks

A woman at a nightclub with friends when she gets a call from her boss and leaves for outside to take it; the woman steps back into the club to find everyone dead, then begins to foam at the mouth.

Cooper informs Ressler that Prescott died during transport; (flashback) Red lights a fire in the transport vehicle; Ressler attempts to resign, but Cooper refuses to accept his resignation.

A woman at a nightclub with friends when she gets a call from her boss and leaves for outside to take it; the woman steps back into the club to find everyone dead, then begins to foam at the mouth.

Toronto - A woman is out at a club with some friends when she gets a call from her boss and steps outside to take it; the woman steps back into the club to see everyone dead, then suddenly starts foaming at the mouth.