CULVER CITY, Calif. - "I think peacock is a word I'd put out there," says Kyle MacLachlan in describing the sartorial style and elegant physical strut of David Swain, the maverick attorney he plays in ABC's new legal series, "In Justice." The show is premiering Sunday at 10 p.m. locally on WCIV.

Dressed as Swain in a smartly tailored business suit, his dark hair thick and shiny enough for any shampoo commercial, MacLachlan exudes energy and enthusiasm as he works out complex moves with director Steven DePaul and fellow cast members, including Jason O'Mara as Charles Conti, an ex-cop-turned-private-investigator.

MacLachlan, 46, first became known when he was picked by David Lynch to star as the heroic Paul Usul Muad'Dib Atreides in the 1984 sci-fi epic, "Dune." Although that movie was a dud, Lynch employed MacLachlan more memorably as the young sleuth in the quirky "Blue Velvet" in 1986 and most famously of all as FBI Special Agent Dale Cooper in the oddball 1990 TV serial "Twin Peaks."

As time went by and MacLachlan's efforts to find another quality TV series failed, he "started realizing that 'Twin Peaks' was very special. I didn't realize that at the time. I thought, 'Oh, this is easy.' "

More recently, and successfully, he was a regular for several seasons on HBO's "Sex and the City" as Charlotte's ideal man, Dr. Trey MacDougal. His equally eccentric film career includes the box office bomb "Showgirls," the digital experiment "Timecode" and, most recently, "Touch of Pink," in which he plays the spirit of Cary Grant.

With wisdom, maturity and hindsight, MacLachlan realizes that even a good idea backed by excellent casting and fine writing isn't likely to work as a TV series if it doesn't hit "a core issue" that audiences can grasp.

"I don't know if maybe it's just me that's aware because of researching this show, or that there really is more news coverage of these sort of cases," he says. "But I feel it is very current, and that we may be riding a crest of a wave."

He also thinks the series will stand apart from the glut of other crime and legal shows because it's about getting mistreated people out of jail rather than about chasing down bad guys and locking them up.

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