Message in a Haunted Mansion is the third installment in the Nancy Drew point-and-click adventure game series by Her Interactive. The game is available for play on Microsoft Windows platforms as well as Game Boy Advance. It has an ESRB rating of E for moments of mild violence and peril. Players take on the first-person view of fictional amateur sleuth Nancy Drew and must solve the mystery through interrogation of suspects, solving puzzles, and discovering clues. There are two levels of gameplay: Junior and Senior detective modes. Each mode offers a different difficulty level of puzzles and hints, but none of these changes affect the actual plot of the game. The game is loosely based on a book entitled The Message in the Haunted Mansion (1995).