Brothers and Sisters Episode 216 preview ***SEASON FINALE***

"Prior Commitments" Kevin and Scotty make a commitment to be life partners, Saul finally deals with his identity in a public way, and the family discovers that William (guest starring Tom Skerritt) kept yet another painful secret from his family, on the season finale of "Brothers & Sisters," SUNDAY, MAY 11 (10:02-11:00 p.m., ET), on the ABC Television Network.