From AMC's website:
Based on the book Washington’s Spies written by Alexander Rose, Turn is set in the summer of 1778 and tells the story of New York farmer Abe Woodhull, who bands together with a group of childhood friends to form The Culper Ring, an unlikely group of spies who turn the tide in America’s fight for independence. Turn, from AMC Studios, is written by showrunner Craig Silverstein (Nikita) and executive produced by Barry Josephson (Bones, Enchanted) from Josephson Entertainment. The series stars Jamie Bell as Abraham Woodhull, Kevin McNally as Judge Richard Woodhull, Burn Gorman as Major Hewlett, Angus MacFadyen as Robert Rogers, JJ Feild as Major John Andre, Seth Numrich as Ben Talmadge, Daniel Henshall as Caleb, and Heather Lind as Anna Strong.I think the only thing I've seen Jamie Bell in was that movie Jumper with Hayden Christiansen (aka Anakin Skywalker/Darth Vader), but he's been in a bunch of other movies. I've never heard of any of the other actors, but then again, how many people had heard of the casts of Mad Men or The Walking Dead before those shows came along? Here's to hoping this doesn't flop like Rubicon did. AMC has had a pretty good track record thus far, so I'm optimistic.