Smallville Episode Details!

Episode 9x04 "Echo"

Tess (Cassidy Freeman) forces Oliver (Justin Hartley) to come to a Queen Industries gala to put the Board at ease, but things go awry when the Toyman (guest star Chris Gautheir) shows up with a bomb and a plan to take revenge on Oliver. The Toyman tells Oliver he must confess to murdering Lex or he will blow the place up. Meanwhile, as part of his training, Jor-El gives Clark (Tom Welling) the ability to hear other people’s thoughts. Allison Mack and Erica Durance also star. Wayne Rose directed the episode written by Bryan Q. Miller

Source: CW