Weekend Movies: 'Paranormal Activity 3,' 'Musketeers,' 'Margin Call'

Here's a preview of what's opening in theaters this weekend, including the third "Paranormal Activity"; the swashbuckling "The Three Musketeers"; the taut financial drama "Margin Call," starring Demi Moore and Zachary Quinto; and the British comedy "Johnny English Reborn," starring Rowan Atkinson.

In Theaters Now (October)

'Paranormal Activity 3' (Oct. 21)

This prequel shows how a young Katie and her sister may have summoned the demon that haunts them for the rest of their lives.

'Margin Call' (Oct. 21)

Who: Demi Moore, Zachary Quinto, Stanley Tucci, Kevin Spacey; directed by J.C. Chandor What: Taking place over a 24-hour period, this thriller revolves around an investment bank during the early stages of the 2008 financial crisis.

'The Three Musketeers' (Oct. 21)

Who: Logan Lerman, Orlando Bloom, Ray Stevenson, Matthew Macfadyen, Milla Jovovich; directed by Paul W.S. Anderson What: As another re-telling of the classic Alexander Dumas novel, it centers on the hot-headed young D'Artagnan (Lerman) along with three former legendary but now down on their luck Musketeers who must unite and defeat a beautiful double agent and her villainous employer from seizing the French throne and engulfing Europe in war.

'Footloose' (Oct. 14)

Who: Julianne Hough, Kenny Wormald, Dennis Quaid, Andie MacDowell; directed by Craig Brewer What: City kid Ren McCormack moves to a small town where rock music and dancing have been banned. His rebellious spirit shakes up the populace.

'Johnny English Reborn' (Oct. 21)

Who: Rowan Atkinson, Rosamund Pike, Gillian Anderson, Dominic West; directed Oliver Parker What: Johnny English goes up against international assassins hunting down the Chinese premier.

'Fireflies in the Garden' (Oct. 14)

Who: Julia Roberts, Ryan Reynolds, Willem Dafoe, Emily Watson; directed by Dennis Lee What: The Taylor family is devastated by an accident that takes place on the day their matriarch (Roberts) is due to graduate from college — decades after leaving to raise her children.

'The Thing' (Oct. 14)

Who: Mary Elizabeth Winstead, Joel Edgerton, Eric Christian Olsen, Ulrich Thomsen; directed by Matthijs van Heijningen Jr. What: In this prequel to the 1982 John Carpenter sci-fi classic, we see what happens to the Norwegian scientific team after they dig an alien form from the Antarctic ice.

'The Big Year' (Oct. 14)

Who: Steve Martin, Owen Wilson, Jack Black, JoBeth Williams, Rosamund Pike; directed by David Frankel What: Three avid bird watchers compete to spot the rarest birds in North America at a prestigious annual event.

'The Ides of March' (Oct. 7)

Who: George Clooney, Ryan Gosling, Philip Seymour Hoffman, Paul Giamatti, Evan Rachel Wood, Marisa Tomei; directed by George Clooney What: An idealistic campaign manager (Gosling) learns a lesson or two in political games while working for a left-wing governor (Clooney) running for president.

'Real Steel' (Oct. 7)

Who: Hugh Jackman, Evangeline Lilly, Dakota Goyo; directed by Shawn Levy What: Set in the near future, robot boxing is a top sport. A struggling promoter and former boxer (Jackman) and his estranged 11-year-old son think they may have found a champion in a discarded robot and go up against the big guys.