I picked this game up during a sale awhile ago because the series seemed interesting. I figured I would start at the beginning. On it's own merits though this is a pretty terrible game.
In it's defense it's also a really OLD game. And it's not like it was easier to make them back then either.
A good adventure game should be reasonably intuitive. At some point it's going to degenerate into click everything in your inventory on every object you can, but it doesn't have to be that way all the time.
Mystery of the Mummy on the other hand has objects that are very easy to miss. Sherlock himself would have trouble uncovering the mystery of the missing item in the inventory.
The dialog is so cheesy that I almost want to call it a feature.
At some point I should finish this, but I didn't really feel like it engaged me.