FAMILY DYSFUNCTION REARS ITS HEAD WHEN BOTH OF ADDISON'S PARENTS ARE IN TOWN, ON TWO BACK-TO-BACK EPISODES OF ABC'S "PRIVATE PRACTICE"

Guest Starring Stephen Collins ("7th Heaven") as The Captain Montgomery and JoBeth Williams ("Poltergeist") as Bizzy Forbes Montgomery

Two back-to-back episodes of "Private Practice" on THURSDAY, DECEMBER 3 start with "The Parent Trap" (9:00-10:00 p.m., ET), in which Addison performs a complex in utero surgery, proving not only her talents to her father but also finally giving them some common ground. Meanwhile Sam and Naomi deal with their own family crisis when they discover their daughter is growing up way too fast, and Violet does the unthinkable.

In the second episode, "Blowups" (10:00-11:00 p.m.), a terrible explosion at Dell's house lands Betsey and Heather in the hospital, and everyone is pushed to the limit trying to save their lives. Tensions rise even higher between Addison and The Captain when her mother, Bizzy, shows up and a shocking family secret is revealed.

"Private Practice" stars Kate Walsh as Dr. Addison Forbes Montgomery, Tim Daly as Dr. Pete Wilder, Audra McDonald as Dr. Naomi Bennett, Paul Adelstein as Dr. Cooper Freedman, KaDee Strickland as Dr. Charlotte King, Chris Lowell as William Dell Parker, with Taye Diggs as Dr. Sam Bennett and Amy Brenneman as Dr. Violet Turner.

Guest cast TBA.

"The Parent Trap" was written by Craig Turk and directed by Donna Deitch.

"Blowups" was written by Sonay Washington and directed by Mark Tinker.

"Private Practice" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning. TV parental guidelines will be posted closer to airdate.

For more information on "Private Practice," visit ABC.com.