The current film Knives Out is an absolutely first rate murder mystery. It's on a par with Sleuth and The Last of Sheila and I highly recommend it. The film does have a DS connection. Joseph Gordon-Levitt has a brief cameo. You won't see him on screen. It's strictly an audio cameo. Pay close attention to an early scene where Marta, the heroine, is at home with her mother and sister. Her sister is watching some kind of police procedural. It's apparently rather graphic and the voice of an officer can be heard. That's Joseph. It's just a few lines but he is definitely there.