Season 6, Episode 20 Hook, Line and Sinner

First Aired: April 29, 2010

Sloan (Leven Rambin) returns just as she's about to give birth, and Mark must deal with the prospect of his grandson's adoption. Meanwhile, Teddy feels threatened when Derek makes overtures to a distinguished cardiothoracic surgeon; and the captain of a crab boat is impaled by a shark hook.

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