ET is behind the scenes with the cast of the controversial new series, "Swingtown," premiering tonight at 10 p.m. on CBS, to get the 411 from the cast as to whether or not they feel the series is too sexy and risqué for TV.

"While the show doesn't shy away from adult content, it is really not about sex," says MOLLY PARKER, whose character Susan Miller got pregnant in high school, so she got married and has only been intimate with one man in her life -- her husband (JACK DAVENPORT). "I think people are ready to take an honest and fun look at this time."

The couple that introduces the Millers to the swinging lifestyle is the Deckers -- LANA PARRILLA is Trina Decker, a former stewardess married to an airline pilot, Tom Decker (GRANT SHOW).

"There is a trust and openness between these two that you don't expect," Lana says of the relationship between Trina and Tom.

While Grant points out, "As fun as it is, as sexy as it is, it is a commentary on a historical time."