In case anyone is interested, I wrote a review for this game, over on my website! ^^ Overall, it's a cute game and I think is worth a playthrough (or two, to get the other achievements...and possibly three because I have yet to beat the apple bobbing game).
https://www.artsandwitchcrafts.com/games/sleuthhounds-the-halloween-deception-re...
And if you really get stuck on storyline quests, I have a "walkthrough" for those as well! (I made it after I spent like ten minutes clicking on things for one of them >.> )
https://www.artsandwitchcrafts.com/games/sleuthhounds-the-halloween-deception-wa...
In summary, cute and fun game. Target audience is probably preteens.
The second I've played in this series, though I don't have a review written for the other one yet.