Brightstone Mysteries: Paranormal 

Brightstone Mysteries: Paranormal Hotel is a puzzle game developed for Mac that offers you many challenging riddles. This app provides you with a comprehensive help guide, lets you choose between three difficulty levels, and brings you an interesting storyline.

You play as a young detective called Bridget Brightstone whose goal is to investigate a case as a favor for her boss. She will travel to a spooky castle filled with mystery where she will try to find a missing necklace. However, during her investigation, the victim of the robbery is killed and Bridget's new objective is to find the murderer.

Even though its artworks aren't impressive, this game still caught my attention with its fascinating plot and challenging puzzles. Plus, the sound effects make this game even scarier than it already is.

Plus, you have access to plenty of useful hints which you can use when you're not sure how to proceed with your investigation. On your quest, you will interact with many characters, collect clues from many locations, and much more.

With that being said, it's worth buying the full version of this game if you like the storyline of Brightstone Mysteries: Paranormal Hotel. However, you can find many other hidden object games that can provide you with quality graphics and interesting plots, not costing more than the aforementioned game.