"Lost" -themed "Phineas and Ferb" premieres Sept. 29 on Disney XD

via press release:

Phineas and Ferb UN'LOCKE a new mystery themes episode of "Lost" with the story of Damon Lindelof and guest star Terry O'Quinn, from Monday, September 29 on Disney XD

- Jane Kaczmarek and also guest starred Rob Morrow -

Emmy Award-winning Disney Television Animation animated series "Phineas and Ferb" is a tribute to the hit ABC series "Lost" with a special episode with the story of "Lost" co-creator and writer Damon Lindelof and guest star "Lost" favorite Fans Terry O'Quinn (John Locke), the premiere Monday, Sept. 29 (19.30 clock ET / PT) on Disney XD. The episode titled "in Danville lost," also guest star Jane Kaczmarek ("Malcolm in the Middle") and Rob Morrow ("Numb3rs").

A mysterious grave sealed enclosure in the backyard Phineas and Ferb and they fight to open it, only to discover that they have unleashed something they can not control. Meanwhile finds out that Dr. Doofenshmirtz Perry has been removed and on to Seattle, where another scientist secret evil professor has his own sinister plan. Terry O'Quinn expressed Mystery Professor, Jane Kaczmarek and Rob Morrow as residents Denise and Bernie capsule.