Masterpiece offers a glimpse of the upcoming season of "All Creatures Great and Small," set to return on January 7, 2024. Season 4 features Nicholas Ralph reprising his role as the young country vet James Herriot, now happily married to Rachel Shenton's character, Helen Herriot. Samuel West returns as James' capricious mentor Siegfried Farnon, alongside Anna Madeley as Mrs. … [Read more...] about All Creatures Great and Small | Season 4 Trailer | PBS