Episode Six - S4-E6
Continuity mistake: When Beverly and Carol are walking through the park, Carol begins having a conversation on her phone and Beverly begins to mimic what she is saying. Whilst this is happening, in the far background, there are two people shown walking in the opposite direction and also a man walking in the same direction as Beverly and Carol. As the shot ends the man is far past the other two walking in the opposite direction. The shot then changes and the man walking forwards and the other two people walking in the opposite direction walk past each other a second time.