Episode #1.1 - S1-E1
Continuity mistake: When he is asked "The culprit is a woman, isn't it?", the doctor is suddenly holding the pen between both hands instead of just with the right hand. (00:29:55)
Episode #1.2 - S1-E2
Continuity mistake: When the equivalent of Miss Debenham tells the Colonel that reaching the 12 people figure might be difficult, her hands and the secretarys are in a different position compared to the previous shot (hers are raised, his are crossed in a different pattern). (00:45:45)