Blue Bloods First Look Video: What Is Frank's Secret Tie to a Gossip Girl Vet?

“Spotted: Gossip Girl‘s Mama Waldorf cozying up to Blue Bloods top cop Frank Reagan. An arresting development, wouldn’t you say?” — and TVLine has a first look at the flirty encounter.

As we first reported, Margaret Colin, who plays Blair’s mother Eleanor on Gossip Girl, is guesting on the CBS drama (this Friday at 10/9c) as Melanie Maines, a high-profile cable news reporter who “meets” Frank (played by Tom Selleck) at a New York City event. We quickly learn, however, they are anything but strangers. Alas, not long after reuniting, Melanie will get pulled into Frank’s professional life, when she is the target of an assault.

But until then, there are fun, flirty moments like this one, where we see how close the two are — meaning, she knows the commish’s very specific drink order.

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