Completely Foolproof (S04E12)

S04E01 Would You Believe It? S04E02 Vicious Circle S04E03 The Boy Who Talked with Animals S04E04 The Best of Everything S04E05 A Woman's Help S04E06 Shatterproof S04E07 The Sound Machine S04E08 Never Speak Ill of the Dead S04E09 The Best Policy S04E10 The Last Bottle in the World S04E11 Kindly Dig Your Grave S04E12 Completely Foolproof S04E13 There's One Born Every Minute S04E14 Bosom Friends S04E15 A Glowing Future S04E16 The Way to Do it S04E17 Hijack