Buy it on: Mac App Store
Price: Free (Lite)/$3.99 (Full)
In this hidden object adventure developed by Big Fish Games, you play as Dr. Philip White, who becomes stranded on his way to treat a wealthy client, Mr. Gray, after his car falls off a collapsing bridge. He comes across the mysteriously (and recently opened) White Wolf Hotel.
This game is impressive visually, particularly in the cutscenes, and runs smoothly on Macs running OS X v10.7 (Lion) or later.