SHIRLEY SCHMIDT WORKS ON A CASE WITH FORMER HUSBAND IVAN TIGGS, PAUL LEWISTON�S MANY ABSENCES AT THE LAW FIRM ARE SORELY FELT, AND CATHERINE PIPER HELPS HER 83-YEAR-OLD FRIEND ESCAPE FROM HER HOSPITAL ROOM, ON ABC�S �BOSTON LEGAL�

Guest Star Tom Selleck Returns as Ivan Tiggs

�Chitty Chitty Bang Bang� � While Shirley Schmidt and former husband Ivan Tiggs (Tom Selleck) work together on a divorce case involving a couple arguing over their Victorian erotica collection, the recently remarried Ivan tries once again to woo Shirley back into his life. Meanwhile, now that Paul Lewiston is single-handedly taking care of his three-year-old granddaughter, his presence at the firm is sporadic and his absence is sorely felt. And, after Catherine Piper (Betty White) helps her 83-year-old friend, Adele (Norma Michaels), escape from the hospital where her court assigned conservator had placed her, Alan Shore steps in to help Adele regain control of her life, on �Boston Legal,� TUESDAY, MARCH 21 (10:00 -11:00 p.m., ET), on the ABC Television Network.

Boston Legal� stars James Spader as Alan Shore, Julie Bowen as Denise Bauer, Mark Valley as Brad Chase, Rene Auberjonois as Paul Lewiston with Candice Bergen as Shirley Schmidt and William Shatner as Denny Crane.

Guest starring are Tom Selleck as Ivan Tiggs, Betty White as Catherine Piper, Ed Begley as Clifford Cabot, Joan McMurtrey as Natalie Cabot, Patricia Belcher as Judge Leslie Bishop, Norma Michaels as Adele Freeman, Matt Malloy as Donald Wharton, Anne Betancourt as Judge Isabel Hernandez, Lamont Dixon as attendant, Carol Kiernan as manager, Ken Davitian as Mr. Kahanov and Andrew Prine as Sam Wolfson.

�Chitty Chitty Bang Bang� teleplay by Janet Leahy & Lawrence Broch, story by Janet Leahy & Phoef Sutton & Sanford Golden & Karen Wyscarver. Directed by Ellie Kanner.

��Boston Legal� is broadcast in 720 Progressive (720P), ABC�s selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning.

A TV parental guideline will be posted closer to airdate.