S04E01 - Becky

S04E02 - See No Evil

S04E03 - The Shiners*

S04E04 - Many Happy Returns

S04E05 - The Sky's the Limit

S04E06 - A Medal for Valour

S04E07 - The Elusive Mr. Smith

S04E08 - The Hunting Party

S04E09 - Souls of Like Mind

S04E10 - A Man of Means

S04E11 - The Miller's Son

S04E12 - Down to the Sea

S04E13 - Duty Bound

S04E14 - Anniversary Waltz

S04E15 - Disguises

S04E16 - The Fine Art of Horsetrading

S04E17 - Boy's Brigade

S04E18 - Ancient Wounds*

S04E19 - From Chimborazo to Canton*

S04E20 - Flying the Coop

S04E21 - Bringing Up Thomas

S04E22 - Tales of the Canadas