Episode #4.2 - S4-E2
Revealing mistake: Camille puts the name of the victim and "Watergate" as search terms, and manages to find the relevant news item from the past. The URL of the website though is just the one of the (fictitious) homepage (watergatenews.org), and not of a specific article. Moreover, the article is half relevant info, and half generic guide about surfing with a brisk cut from one to the other. (00:21:50)
Episode #1.5 - S1-E5
Plot hole: Leon Hamilton is the most hated man in Sainte Marie, with over 900 people on the island conned by him. Yet exactly one person in the whole island knows how he looks like, every newspaper and website never ever published a picture of him even during the very public trial when they were trying to get their thousands of dollars back nor publish an archive picture after his death.
Episode #3.2 - S3-E2
DS Camille Bordey: If you want to talk some more, you know, about your wife.
DI Humphrey Goodman: I'm fine, Camille. I'm British. I'm going for the bottle it all up and turn it into a bitter little ball approach.
DS Camille Bordey: But you look sad.
DI Humphrey Goodman: I'm not sad. I'm squinting. My squinty face is uncannily similar to my sad face. [Pulls extremely weird expression] See? (00:50:40)
Question: When Richard reminisces about England, he talks about going to the pub and having a pint. Yet the whole time he's in Saint Marie, he is never seen to drink alcohol with the rest of the team; only cups of tea. Why?
Answer: Most likely they had only tropical exotic drinks, he wanted an old fashioned English beer.