7/10
Honestly think this case gets underrated because of the ending and the structure. Apollo/Blackquill on Day 1 is great. Cosmos is a fantastic lying non-culprit witness. The ending is legitimately shocking, even if it does turn out to be a red herring.
I also love astronomy, so that's probably a bit of my bias showing here...!
https://imgur.com/WqDcNNq
https://imgur.com/89Z5jrB