Did the doctors manage to save everyone?
On Grey's Anatomy Season 18 Episode 5, tensions flared up when an explosion rocked Seattle.
With an influx of patients, and a string of Station 19 firefighters in danger, there was a lot of drama.
Meanwhile, Owen experienced PTSD after hearing the explosion.
Elsewhere, Meredith and Amelia met up with a familiar face for their study.
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.