Episode #1.2 - S1-E2
Continuity mistake: Richard calls it a day on the investigation, but he's still chatting about it with Camille during a walk. When he says "One thing's always puzzled me about weddings", two women are crossing the street in front of him. Few seconds and a cut later, when he mentions the bouquet, here they are again, the same girls crossing the same street coming from the same direction as before. (00:23:20)