[Warning: The below contains spoilers for All Creatures Great and Small Season 6, Episode 6, “Our Hearts Are Full.”]

Something about Tristan Farnon was different in the sixth season of the esteemed Masterpiece series All Creatures Great and Small. Having just returned to the Yorkshire Dales on leave after serving with the Royal Army Veterinary Corps during World War II, Callum Woodhouse’s character initially appeared to be the same lively, occasionally impish lad we’ve come to know, whether he was helping James (Nicholas Ralph) unload an elephantine X-ray machine or vying with elder brother Siegfried (Samuel West) to prove who’s the better horse doctor.

Originally published on tvinsider.com, part of the BLOX Digital Content Exchange.