Grey's Anatomy Valentine's Day Scoop: Hot MerDer Action!

Grey's Anatomy will give fans plenty to talk about this Valentine's Day.

First, there's Sofia, who threatens to derail Callie’s big February 14 surprise for Arizona (the episode actually airs February 9), but it’s not the youngster's fault ... it’s Mark’s fault. Raise your hand if you're surprised!

It's his fault indirectly, at least. Callie asks him to look after their daughter, but he’s got plans of his own, so he tries to pawn his babysitting duties off on the other doctors. That's a scenario that can't end well, right?

Maybe it can. According to TV Line, the episode ends with Callie escorting a blindfolded Arizona to ... you fill in the blank! Sounds like a fun plot line in any case, especially if it doesn't leave the family in tatters.

Meanwhile, fans of Meredith and Derek will be happy to know that the show's signature couple is very much a part of the Valentine's Day episode in question - they are definitely in the mood. Let's just leave it at that.

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