I have tried several different mystery subscription boxes and Sleuth Kings is by far my personal favorite. The cases and materials included just keep getting better and better and nothing ever feels stale or reused. The difficulty of the puzzles is nicely balanced with many of them being quite challenging but not frustrating. There is also a very user-friendly hint system if you need an extra nudge in the right direction on any given puzzle. On top of all that, the level of customer service is phenomenal. I couldn’t recommend this subscription box more.