S8, E14: An explosion at LuthorCorp kills all the board members and injures Oliver, who was there to announce the merger of his company with LutherCorp. Oliver believes that Lex is responsible for the blast, but Clark and Lana (Kristin Kreuk) learn that the bomber is Winslow Schott (guest star Chris Gauthier "Eureka"), a toymaker and former Queen Industries employee with a grudge against Oliver.