Chips Ahoy - S2-E10
Revealing mistake: Flobert comes into the court carrying a bag of potatoes which would probably weigh 80 pounds. It must be a rather inaccurate prop because it moves like it only weighs about 15 pounds.
Revealing mistake: Hannah sits in a conference room and pulls a landline phone towards her to dial her friend, asking about the will Owen left. The phone however isn't in any way connected, hence no call could have taken place.