Grey's Anatomy Season 8, Episode 17 : One Step Too Far

Grey's Anatomy Season 8, Episode 17 : One Step Too Far

Derek asks Meredith to work with him in neuro again; Catherine Avery (Debbie Allen) comes back to Seattle Grace and takes an interest in Richard; Cristina becomes increasingly suspicious of Owen; Morgan may be falling for Alex. Guest Stars: Teresa Huang, Payton Silver, Debbie Allen, Amanda Fuller, Summer Glau, James Avery, Rebecca Hazlewood, Virginia McMath, Chelsea Harris, Charles Emmett, Rosalyn Sidewater,

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