The Clinic Guest cast, played by Keith McErlean Episode 5x01: Episode 1 (Sep 30, 2007) Episode 5x03: Episode 3 (Oct 14, 2007) Episode 5x05: Episode 5 (Oct 28, 2007) Episode 5x06: Episode 6 (Nov 4, 2007) Episode 5x07: Episode 7 (Nov 11, 2007) Episode 5x09: Episode 9 (Nov 25, 2007) Episode 5x10: Episode 10 (Dec 2, 2007)