"Desperate Housewives" returns for its seventh season this fall and Executive Producer Marc Cherry tells ET, "The secrets get darker, the action gets juicier and I am going to try to make it sexier!"

ET was on Wisteria Lane as the seventh season began filming to get the inside scoop on what lies ahead for Gaby (Eva Longoria Parker), Bree (Marcia Cross), Susan (Teri Hatcher) and Lynette (Felicity Huffman).

"What we start to deal with in the first episode is the ramifications of something we have been holding back for six seasons," Marc says. "[Gaby] finally finds out that Andrew [Shawn Pyfrom] -- Bree's son -- ran over her mother-in-law. That starts to affect their friendship in a major way."

That hit-and-run accident may be old news, but there will be another hit-and-run in the second episode of the new season, putting the two families into conflict a second time.

The sexier action -- and Marc jokes that Bree may have a red bra in her future -- will be added by Brian Austin Green, who will be a working-class guy who becomes Bree's new love interest.

Also joining the cast this season is Vanessa Williams, who will be playing the wife of a professional athlete who is having marital problems.

"She has money and style but her background is different [than Gabby's]," Marc says. "We are introducing her as Lynette's best frenemy from college, so she comes and shines some light on Lynette's choices. It is some of the best bitchy dialogue we have had on this show!"

Returning to Wisteria Lane after a term in prison is Paul Young [Mark Moses], who was framed by Felicia Tilman [Harriet Sansom Harris] for murder. Felicia disappeared after cutting off two of her fingers, making it appear as if Paul was responsible for her demise. Paul returned at the very end of season six, renting Susan and Mike's [James Denton] house, now that finances have forced them to move into an apartment.

"We are going to find out how he was released from jail and that storyline will play out through the year," Marc says.

And don't be surprised if Betty White makes a visit to Wisteria Lane. She and Marc worked together on "Golden Girls," and he says, "I adore Betty. If there is any way to do it, I would love to have Betty on the show. It is something that would make my heart very happy."

"Desperate Housewives" returns for its seventh season on ABC on Sunday, Sept. 26 at 9 p.m.

Brian Austin Green Heading to 'Desperate Housewives' Jul 09, 2010 02:00 PM

Vanessa Williams Set to 'Wreak Havoc' on 'Desperate Housewives' May 18, 2010 02:01 PM

Teri Hatcher Becomes Mother Hen on the Internet May 11, 2010 04:30 AM