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Free is the seventeenth and final episode of the fourth season of Desperate Housewives, and the eighty-seventh episode overall.
Starring: Teri Hatcher (Susan), Felicity Huffman (Lynette), Marcia Cross (Bree), Eva Longoria Parker (Gaby), Nicollette Sheridan (Edie), Ricardo Chavira (Carlos), Andrea Bowen (Julie), Doug Savant (Tom), Kyle MacLachlan (Orson), Dana Delany (Katherine), Brenda Strong (Mary Alice), James Denton (Mike)
Guest Starring: (in credits order) Nathan Fillion (Adam), Bill Smitrovich (Reverend Green), Kathryn Joosten (Karen), Kevin Rahm (Lee), Tuc Watkins (Bob), Ellen Geer (Lillian Simms), Peter Birkenhead (Dr. Joshua Dolan), Andy Umberger (Detective Romslow), Rick Otto (Detective Paul Bullock), Billy Gardell (Roy Harding), Sonya Eddy (Vanessa), Gale Harold (Susan's new man), Justine Bateman (Ellie Leonard), Gary Cole (Wayne Davis), Lisa Long (Irene Semanis), Michèle Marsh (Sheila, Kayla's Grandmother), Paul Keith (Joe, Kayla's Grandfather), Leslie Karpman (Hostess), Danny Gurwin (Assistant Pastor), Kristen O'Meara (Griselda Sage), Melody Butiu (Nurse Janice), Dale Waddington Horowitz (Nurse), Helen Slayton-Hughes (Elderly Woman), Mark Brady (Jail Cell Officer), Josie Divencenzo (Policewoman), Wendy Schenker (Arresting Police Officer), Hailee Denham (Young Dylan), Kaili Say (Juanita Solis), Daniella Baltodano (Celia Solis), Scotch Ellis Loring (Uniformed Cop)