Tomorrow night, Grey's Anatomy returns with the third episode of Season Four. "Let the Truth Sting" will surely mean big changes - some of them difficult - for the characters we know and love. Here's a sneak peak at George and Izzie having an emotional exchange ... it looks like this might not end well.

[youtube]http://www.youtube.com/watch?v=tpDrb7moKHk[/youtube]

Follow the jump for another clip from "Let the Truth Sting," in which Lexie Grey is (reluctantly) taken under Meredith's wing in Cristina's absence.

 [youtube]http://www.youtube.com/watch?v=YRZeR-8KkwA[/youtube]

Looks like a good one! As always, you can discuss "Let the Truth Sting" with fellow fans in our forum - before, during and after the episode!

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