The residents from Seattle Grace and Mercy West compete for patients. "Invasion" is looking like one heck of a tension-filled episode.
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A sixth sneak preview of "Invasion," the October 15 episode of Grey's Anatomy. Lexie finds herself playing tour guide to a new resident.
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Callie is pretty pissed about her dad. Arizona is the voice of reason. "Invasion" is looking like an intense episode.
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Callie's dad is back. And we thought the arrival of the Mercy West crew was the only "Invasion" going on this episode.
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A third sneak preview of "Invasion," from the Season 6 premiere of Grey's Anatomy. Izzie meets a new resident, Charles Percy.
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Another sneak peek at "Invasion," from Season 6 of Grey's Anatomy. Hunt is calling the shots, but the Mercy West crew is getting all uppity.
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The others have arrived on Grey's Anatomy. It's an "Invasion" of epic proportions as the Mercy West gang descends on SGH.
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A promo for "Invasion," next week's all-new episode of Grey's Anatomy. Looks like someone might be getting laid off ...
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Grey's Anatomy Season 6 Episode 5 Quotes

When you get sick, it starts off with a single infection. One lone nasty intruder. Pretty soon the intruder duplicates. Becomes two. Then those two become four. And those four become eight. Then, before your body knows it, it's under attack. It's an invasion. The question for a doctor is, once the invaders have landed, once they've taken over your body, how the hell do you get rid of them?

Meredith (narrating)

You think you can pray away the gay. You can't pray away the gay!

Callie