Gugu Mbatha-Raw and Boris Kodjoe star in NBC's "Undercovers"

As the summer winds down and autumn begins, kids head back to school, the air turns cooler and farmers offer a bounty of fresh fall food.

The television landscape also changes with a harvest of new shows. With so many options, it's difficult to sort out what will bring in healthy ratings and what will flop. So, here's a look at what's creating the biggest buzz from each of the major networks.

Among the most buzzworthy shows this season is NBC's mysterious "The Event," premiering Sept. 20. Starring Jason Ritter, the series has the potential to capture the attention of lost "Lost" fans looking for a new conspiracy since the ABC show's demise.

"The Event" created a huge stir when the pilot premiered at San Diego's Comic-Con in July, and the Peacock execs are heavily promoting the new series, even going so far as to offer advanced screenings to five cities. Fans were invited use a special "Demand It!" platform online to cast votes to bring the pre-broadcast premiere to their city or town.

Behind the scenes, NBC has snagged "Lost's" J.J. Abrams as co-writer and executive producer for "Undercovers," about a husband-and-wife spy duo. Also, "CSI" mastermind Jerry Bruckheimer helms the fast-paced actioner "Chase," which follows a team of U.S. marshals on the hunt for fugitives.

Other new NBC series include "Law & Order: Los Angeles" (which made waves in the spring when NBC announced it was producing this series instead of another season of the original), "Outsourced," "School Pride" and "Outlaw."

Another show that has people talking is CBS's "$#*! My Dad Says" (pronounced "Bleep My Dad Says"), scheduled to premiere Sept. 23. The comedy is based on the popular Twitter feed by writer Justin Halpern, who literally repeats the comical, albeit sometimes offensive, things his father says.

Jim Belushi stars in CBS's "The Defenders"

Its basis in Twitterdom might be reason enough to tune in, but there's more: the series marks William Shatner's return to prime time, likely to the delight of Trekkies everywhere. He portrays said father, while Jonathan Sadowski stars as son Henry, presumably the television alter ego of Halpern. "MADtv" alums Will Sasso and Nicole Sullivan buddy up once again as Henry's brother, Vince, and his wife, Bonnie.

CBS also brings viewers an update of "Hawaii Five-0," starring Alex O'Loughlin, "Lost's" Daniel Dae Kim and "Battlestar Galactica's" Grace Park. Billy Gardell ("Yes, Dear") and Melissa McCarthy ("Samantha Who?") team up for the comedy "Mike & Molly," about an overweight cop who falls in love. Familiar faces Jim Belushi and Jerry O'Connell blur the lines between comedy and drama in the legal offering "The Defenders," while leading man Tom Selleck headlines "Blue Bloods," a police drama that also stars Donnie Wahlberg.

ABC brings former "China Beach" star Dana Delaney back into the fold as the star of the new drama "Body of Proof" (premiere date to be announced). She stars as Dr. Megan Hunt, a talented neurosurgeon whose career is cut short because of injuries sustained in a car accident. The plot sounds like a modern-day "Quincy, M.E." as Hunt takes a job as a medical examiner determined to figure out what, or who, killed her "patients."

The alphanetwork scored a double whammy with "Mr. Sunshine," starring former NBC talents Matthew Perry ("Friends") and Allison Janney ("The West Wing"). When Ben Donovan (Perry) turns 40, he has an epiphany of sorts and re-thinks his self-involved life as a manager for a second-rate San Diego sports arena. Janney co-stars as Crystal, Donovan's boss and owner of the facility. A premiere date hasn't been pinned down, but it's slated for mid-season.

Filmed in Detroit, the police drama "Detroit 1-8-7" stars Michael Imperioli as a brilliant homicide detective. "The Shield's" Michael Chiklis returns to prime time on Sept. 28 in "No Ordinary Family," a fantasy series in which a family gains superpowers.

Other ABC offerings include the dramas "My Generation," "The Whole Truth" and "Off the Map," along with the comedy "Better with You."

The folks at Fox focus on comedy this season with "Raising Hope" and "Running Wilde." Newcomer Lucas Neff takes the lead in "Raising Hope" as young slacker Jimmy Chance, who after a brief fling with a fugitive, becomes a father. Slated to premiere Sept. 21, the series also stars Martha Plimpton as Jimmy's mother, Virginia, and Garret Dillahunt as his dad, Burt. Oscar winner Cloris Leachman plays Jimmy's grandmother.

Will Arnett returns to Fox in "Running Wilde," also scheduled for a Sept. 21 premiere. The one-time star of "Arrested Development" portrays the spoiled son of an oil tycoon trying to win the heart of his childhood sweetheart, played by Kerri Russell.

On the serious side of things, James Wolk stars in the new Fox drama "Lone Star," described as a modern-day "Dallas." The saga follows schemer Robert Allen (Wolk) as he lives separate lives while bilking people out of their money. Jon Voigt stars as Allen's powerful oil-tycoon father-in-law.

The police drama "Ride Along" rounds out the Fox fall schedule, while the highly anticipated Steven Speilberg adventure series "Terra Nova," about a family stranded in a land of dinosaurs, has been pushed back to later in the season. The comedy-heavy Fox fall schedule also includes the new animated series "Bob's Burgers," set to air mid-season.