S4 E1: The Town of No Return

S4 E2: The Gravediggers

S4 E3: The Cybernauts

S4 E4: Death at Bargain Prices

S4 E5: Castle De'ath

S4 E6: The Master Minds

S4 E7: The Murder Market

S4 E8: A Surfeit of H2O

S4 E9: The Hour that Never Was

S4 E10: Dial a Deadly Number

S4 E11: Man-Eater of Surrey Green

S4 E12: Two's a Crowd

S4 E13: Too Many Christmas Trees

S4 E14: Silent Dust

S4 E15: Room Without a View

S4 E16: Small Game For Big Hunters

S4 E17: The Girl From Auntie

S4 E18: The Thirteenth Hole

S4 E19: Quick-Quick Slow Death

S4 E20: The Danger Makers

S4 E21: A Touch of Brimstone

S4 E22: What the Butler Saw

S4 E23: The House That Jack Built

S4 E24: A Sense of History

S4 E25: How to Succeed... at Murder

S4 E26: Honey For the Prince