Question: when did sid go to jail in father brown
Answer: Daniel Whittaker -- Daniel Flynn ( 2015 -- present ) : He has appeared in 2 episodes , in he is a cold hearted bullying MI5 spy who threatens to blackmail Lady Felicia over her marriage , in The Man in the Shadows he had Sid arrested on false charges after he entered a M15 room , and in The Face of the Enemy he requested Lady Felicia to exchange a roll of film one of her lovers who is a Soviet spy ( which he was n't ) , and he has Lady Felicia arrested on false charges and Father Brown had persuaded him to let her go .