Daniel Radcliffe In 'Kill Your Darlings': Watch The Trailer Now!

'Harry Potter' star embodies beat poet Allen Ginsberg in this literary and historical thriller.

For 10 years, Daniel Radcliffe ran through the halls of Hogwarts School of Witchcraft and Wizardy with a tight-knit group of friends, but he's running with a very different crowd in "Kill Your Darlings," as we can see in the first official trailer, which just premiered at Yahoo! Movies.

In his first role as an American, Radcliffe plays Allen Ginsberg, one of the leading icons of the Beat Generation and a member of a literary crew — including Lucien Carr, Jack Kerouac and William Burroughs — that ran around Manhattan's Upper West Side, challenging the poetic form and occasionally killing people.

"Kill Your Darlings" tells the true-life story of Ginsberg's and Carr's meeting, their relationship — which, as many breathless Sundance dispatches noted, becomes physical — and the murder of David Kammerer ("Dexter" star Michael C. Hall).

While the story might seem like a historical fiction spun out of the lives of several prominent literary figures, the history behind "Kill Your Darlings" is very much based on true events, circumstances that played a major role in many of the works produced by the group in the years afterward. It's worth reading up on — if you don't mind spoilers.

Radcliffe and Dane DeHaan, who plays Lucien Carr, earned raves across the board when "Kill Your Darlings" premiered in January at the Sundance Film Festival. The film, director and co-writer John Krokidas' feature debut, is now set for a showing next week at the Toronto International Film Festival, before opening to the general public on October 16.