Murder at Moonveil Manor is a very atypical adventure written for 5th level characters by Vall Syrene and Mogman J. Dubloon. On the one hand, the adventure presents a very modular and almost sandbox-y approach to a murder-mystery. There is opportunity to roleplay with a cast of fun and interesting NPCs, to explore the opulent Moonveil Manor in order to collect clues and uncover the murderer, and to fight with a mimic as well as the climactic final battle once the murderer and their motives are discovered.
However, there is a lot to be desired from the perspective of a DM looking to run this adventure. First of all, there is no map of Moonveil Manor, nor is there much information describing the manor's layout-putting it on the DM to either create a map or spend some time to design the general layout of the manor. The authors of the product claim this makes it easy for DMs to manipulate to their advantage, but in my opinion it just adds to the prep work for this module. This is compounded by the fact that the authors really don't take into consideration any possibilities outside of the four main tableaus they write out as chapters, leaving it to the DM to scatter clues throughout the rest of the house. Secondly, the production of this document is rather poor. I normally don't mind when homebrewery documents aren't in perfect tune with WotC official design, but this product is very distracting and cluttered.
Overall, I feel that Murder at Moonveil Manor has a handful of intruiging elements and a basic framework that could make for a fun adventure, but requires a lot of prep work by the DM to reach a point where it is ready to be run at a table, even with considerable improvisation.