Harper's Island Guest cast, played by Sean Rogerson Episode 1x01: Whap (Apr 9, 2009) Episode 1x02: Crackle (Apr 16, 2009) Episode 1x03: Ka-Blam (Apr 23, 2009) Episode 1x04: Bang (May 2, 2009) Episode 1x13: Sigh (Jul 11, 2009)