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Matthew Macfadyen confessed to the light-hearted torment as the cast discussed the fourth series of the 19th-century detective drama, which returns weekly on Amazon Prime from January 15.
Speaking of Lewis’s role as Desk Sergeant Samuel Drummond, Macfadyen said: “It’s always great to have fresh faces thrown into the mix and what a lovely fresh face Matthew Lewis has. Also you can bully them a little bit, that’s quite nice as well, isn’t it?
“Just gentle bullying,” he qualified.