Communication Problems (a.k.a. Theft) - S2-E1
Corrected entry: In the opening scene, Mrs Richards is demanding change for the waiting taxi driver. However we never ever see her go outside to hand the taxi driver his change. Mrs Richards remains inside the hotel at all times throughout this scene.
Correction: In this scene, the taxi driver carries Mrs Richards' cases in for her, and then waits for his money. When Mrs Richards interrupts Polly for the second time, you see the taxi driver leave the hotel.