Three new clips from tomorrow night's episode of Grey's Anatomy, "I Saw What I Saw," depict an intense, combative scene at Seattle Grace. That's putting it mildly.

Words are exchanged. Accusations are made. Fingers are pointed.

A chaotic incident that results in 12 different accounts from 12 different doctors leaves everyone on edge and Richard searching for answers (and someone to blame).

When Alex hears a snide comment from a Mercy Wester, he loses it ...

[video url="http://www.greysanatomyinsider.com/videos/i-saw-what-i-saw-sneak-preview-1/" title="I Saw What I Saw Sneak Preview #1"] [/video]

Follow the jump for two more previews from the episode. Lexie, Cristina and others get grilled, while the animosity between the newcomers and old timers lingers ...

[video url="http://www.greysanatomyinsider.com/videos/i-saw-what-i-saw-sneak-preview-2/" title="I Saw What I Saw Sneak Preview #2"] [/video]

[video url="http://www.greysanatomyinsider.com/videos/i-saw-what-i-saw-sneak-preview-3/" title="I Saw What I Saw Sneak Preview #3"] [/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.