Hello, I asked several native speakers to pronounce 2 words: besides and in-laws. I heard them all make the /s/ sounds at the end, instead of /z/. I also checked with dictionaries online, and I heard them all make the /s/ sounds. Here are the links: - Oxford Concise: http://www.wordreference.com/definition/besides - Oxford OALD: http://oald8.oxfordlearnersdictionaries.com/dictionary/besides - Cambridge: http://dictionary.cambridge.org/dictionary/british/besides?q=besides - Longman: http://www.longmandictionariesusa.com/lsdae/dictionary#besides So, what are your opinions? Thanks.