At the end when the parents of the murdered bride walk to the edge of the water to throw in their leis the father is wearing flip flops. Cut to moment of throwing the leis and walking back up the beach and he is barefoot.
In episode 1, the Commissioner describes the history of the Island to Poole. It becomes clear that it was most recently a British territory with a French background. However, in this episode we see the Police land rover has the French licence plates you would expect to see in Guadeloupe, where the series is filmed.