NBC will air new dramas from producers J.J. Abrams and Jerry Bruckheimer, a Los Angeles-based version of the "Law & Order'' franchise, two new comedies and a new unscripted series this fall, the network announced Sunday.

The first-year dramas "Mercy'' and "Trauma'' were canceled, along with the science fiction series "Heroes,'' which ran four seasons. NBC announced on Friday that it had canceled "Law & Order'' following a record-tying 20- season run.

NBC is in discussions with "Law & Order'' creator Dick Wolf and "Heroes'' creator Tim Kring about making "farewell'' editions of both shows to be aired during the 2010-11 season, Angela Bromstad, NBC and Universal Media Studios' president of primetime entertainment, told reporters on a conference call.

NBC's new fall dramas are:

-- "Chase,'' a look at the U.S. Marshals Service's searches for the nation's most dangerous fugitives, produced by Bruckheimer, the producer of CBS' "CSI'' franchise and "Cold Case'' and the films "Top Gun,'' "Beverly Hills Cop,'' and the "Pirates of the Caribbean'' and "National Treasure'' franchises. It stars Kelli Giddish, Cole Hauser, Amaury Nolasco, Rose Rollins and Jesse Metcalfe;

-- "The Event" which stars Jason Ritter, whose investigation into the mysterious disappearance of his fiancee (Sarah Roemer) unwittingly begins to expose the biggest cover-up in American history. The cast also includes Blair Underwood as the newly elected U.S. president and "ER'' alumnus Laura Innes as the leader of a mysterious group of detainees.

-- "Law & Order: Los Angeles'' which will be produced by Wolf and Blake Masters, whose credits include the Showtime crime drama "Brotherhood.'' An announcement on casting is expected in two weeks, according to Bromstad.

-- "Outlaw,'' which stars Emmy winner Jimmy Smits as a Supreme Court justice who resigns to return to private practice, determined to represent "the little guy" and use his inside knowledge of the justice system to take on the biggest legal cases. Its producers include former "Tonight Show'' host Conan O'Brien.

-- "Undercovers,'' which stars Boris Kodjoe and Gugu Mbatha-Raw as husband-and-wife spies who return to the CIA after former colleague (Carter MacIntyre) goes missing on the trail of a Russian arms dealer. It is produced by Abrams, who created or co-created "Lost,'' "Alias'' and "Felicity,'' and whose movie credits include directing and co-writing "Mission: Impossible III'' and directing the 2009 release of "Star Trek.''

The new fall comedies ordered by NBC are "Outsourced,'' which stars Ben Rappaport as a manager of a Midwestern company transferred to India to run its outsourced call center, and "Love Bites," an hourlong romantic anthology featuring three loosely connected, modern stories of love, sex, marriage and dating. It is produced by Cindy Chupack, a writer and producer of "Sex and the City.''

The unscripted series is "School Pride,'' a look at communities renovating aging public schools. Its producers include "Curb Your Enthusiasm'' star Cheryl Hines.

"This new schedule brings NBC back to basics with its commitment to quality scripted programming,'' NBC Universal Television Chairman Jeff Gaspin said. "Our new shows are distinctive and feature a combination of the biggest talent, the brightest new stars and the strongest auspices in television.

"With this new schedule, we're poised to take the next step toward our long-term goals with a lineup that has stabilized and has been building solid momentum through the second half of the season.''

Of the five series that premiered on NBC last fall, only the comedy "Community'' was renewed for a second season.

Four series that premiered at midseason were also renewed -- the drama "Parenthood''; the Jerry Seinfeld-produced comedy panel series "The Marriage Ref''; the documentary series about celebrities' family histories "Who Do You Think You Are?'' and the game show "Minute to Win It.''

The comedy "Parks and Recreation,'' will return to NBC's lineup at midseason, as will "The Marriage Ref.'' NBC will air the news magazine "Dateline NBC,'' "Minute to Win It,'' and a two-hour version of "The Celebrity Apprentice'' on Sundays beginning in March following the end of the NFL season.

NBC also announced it had ordered the dramas "The Cape" and "Harry's Law'' for midseason, along with the comedies "Perfect Couples,'' "Friends With Benefits,'' "The Paul Reiser Show'' and the competition series "America's Next Great Restaurant'' for midseason.

A remake of the 1974-80 detective drama "The Rockford Files'' is being "reworked'' for either midseason or next fall, Bromstad said. Dermot Mulroney was cast in the title role originally portrayed by James Garner.

"We had a very strong pilot,'' Bromstad said. "However, to put this new title out there, it has to be A-plus plus. and I think we had an A-minus/B- plus pilot and we just want to get it right.''

Here is NBC's fall schedule:

Sunday: "Football Night in America''; "NBC Sunday Night Football'';

Monday: "Chuck"; "The Event''; "Chase'';

Tuesday: "The Biggest Loser''; "Parenthood'';

Wednesday: "Undercovers''; "Law & Order: Special Victims Unit''; "Law & Order: Los Angeles'';

Thursday: "Community''; "30 Rock"; "The Office''; "Outsourced''; "Love Bites'';

Friday: "Who Do You Think You Are?''/"School Pride''; "Dateline NBC''; "Outlaw'';

Saturday: Reruns.