Jeffrey Dean Morgan, Martin Henderson

A drama pilot being shepherded in part by Grey's Anatomy creator Shonda Rhimes has found its "McDreamy."

Inside the Box, from Richard Robbins and exec-produced by Rhimes and Betsy Beers, is set in a Washington news bureau and revolves around Catherine, a hard-hitting producer. Playing coworker Jake — aka the Derek to Catherine's Meredith — will be Martin Henderson.

The New Zealand-born Henderson previously landed the male lead in a never-picked-up ABC pilot based on Mr. & Mrs. Smith, where he would have played Brad to Jordana Brewster's Angelina.

The female lead role of Catherine has yet to be cast.

Not going Inside the Box, it should be noted, is Jeffrey Dean Morgan. Although Grey's Anatomy's erstwhile Denny had been set as the male lead in a similar pilot Rhimes had cooking two pilot seasons ago — one centered on a group of female journalists — sources stress that Inside the Box is a distinctly separate project.

Instead, Morgan is busy fielding feature film offers, his spokesperson tells TVGuide.com, and next can be seen on the big screen in Watchmen (opening March 6).

In the meantime, Morgan's in talks to appear in The Losers, a comic-book adaptation in which he would play the leader of a special forces team, according to The Hollywood Reporter. Fans can also find him in The Resident, a forthcoming thriller with Hilary Swank.