When Lionel (John Glover) is shot, Jonathan (John Schneider) is arrested, but after Clark (Tom Welling) and Pete (Sam Jones III) perform their own crime scene investigation, they realize that more than one person had the opportunity to kill Lionel - including Lex (Michael Rosenbaum). Meanwhile, Lana (Kristin Kreuk) is suspicious after she asks her father (guest star Patrick Cassidy) to take on Jonathan's case and he declines for mysterious reasons.