Netflix fans have spent hours trying to find out why the streaming giant uses the 'tudum' sound whenever you open the app or start watching a Netflix original movie or TV show

One of the best things Netflix ever did was signing Rian Johnson up to write and direct Knives Out, a detective story that has spawned one of its biggest franchises. These movies, starring Daniel Craig as Benoit Blanc, are simply irresistible fun – but they're also really well-plotted and filmed.