3x23: Hiatus (Part I)
3x24: Hiatus (Part II)
4x03: Singled Out
4x05: Dead and Unburied
4x06: Witch Hunt
4x08: Once a Hero
4x09: Twisted Sister
4x13: Sharif Returns
4x15: Friends and Lovers
4x16: Dead Man Walking
4x19: Grace Period
4x20: Cover Story
