Luigi's Mansion 2 (Switch) - 100% Walkthrough Part 5: Treacherous Mansion (3-Star)

Part 5 of my 100% walkthrough for Luigi's Mansion 2 HD on Nintendo Switch. This includes the locations of all Gems and Boos in Treacherous Mansion, fifth world of the Luigi's Mansion Dark Moon remaster. This also shows how to get a 3-Star rank on each stage.