The Invisible Hand (S04E23)

S04E01 The Past is Parent S04E02 Evidence of Things Not Seen S04E03 Tag, You're Me S04E04 All My Exes Live in Essex S04E05 The Games Underfoot S04E06 The Cost of Doing Business S04E07 Miss Taken S04E08 A Burden of Blood S04E09 Murder Ex Machina S04E10 Alma Matters S04E11 Down Where the Dead Delight S04E12 A View With a Room S04E13 A Study in Charlotte S04E14 Who Is That Masked Man? S04E15 Up to Heaven and Down to Hell S04E16 Hounded S04E17 You've Got Me, Who's Got You? S04E18 Ready or Not S04E19 All In S04E20 Art Imitates Art S04E21 Ain't Nothing Like the Real Thing S04E22 Turn It Upside Down S04E23 The Invisible Hand S04E24 A Difference in Kind