The Clinic Guest cast, played by Barbara Adair Episode 2x02: Episode 2 (Oct 24, 2004) Episode 2x04: Episode 4 (Nov 7, 2004) Episode 3x02: Episode 2 (Oct 2, 2005) Episode 4x01: Episode 1 (Oct 1, 2006) Episode 4x09: Episode 9 (Nov 26, 2006)