With the images of "Shock to the System" still fresh in our minds, Grey's Anatomy returns with a doozy, "Superfreak" of an episode this coming Thursday, October 7.

As many of you likely know, this marks the latest crossover with ABC's other Shonda Rhimes universe, Private Practice. The characters involved: Two Shepherds.

Derek and Amelia. There's not a lot of love lost between the siblings, so when he receives an unexpected visit from his estranged sister, you could say it's unwelcome.

Meanwhile, the Chief tries to help Alex cope with the fallout from his near-fatal shooting; and Meredith and Derek continue to try to ease Cristina back into surgery.

Here's ABC's first promo for the episode ...

[video url="http://www.tvfanatic.com/videos/superfreak-promo/" title="Superfreak Promo"] [/video]

For a much greater sense of how this episode is going to play out, get ready for eight clips right here and now. Follow the jump, enjoy and tell us what you think ...

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-1/" title="Superfreak Sneak Peek #1"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-2/" title="Superfreak Sneak Peek #2"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-3/" title="Superfreak Sneak Peek #3"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-4/" title="Superfreak Sneak Peek #4"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-5/" title="Superfreak Sneak Peek #5"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-6/" title="Superfreak Sneak Peek #6"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-7/" title="Superfreak Sneak Peek #7"] [/video]

[video url="http://www.tvfanatic.com/videos/superfreak-sneak-peek-8/" title="Superfreak Sneak Peek #8"] [/video]

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