I just found a more detailed description at Hasbro's website:
CLUE® Mysteries Game (Ages 8 & up; 2-6 Players; Approximate Retail Price: $19.99; Available: May 2005)
Set in fictional Hampshire Village, this new addition to the CLUE game line engages players in 50 CLUE mysteries to solve. Each mystery equals a game and unveils another chapter in the CLUE story leading up to the death of Miles Meadow-Brook.
Players are equipped with a toolkit - a special reverse reader, a code breaking key and red reader magnifying glass – used to uncover the clues in the witness wheels at each location throughout the Village. Each location is occupied by one of the eight original suspects who offer the clues to solving the mystery - Professor Plum, Miss Scarlett, Inspector Brown, Mrs. White, Mrs. Peacock, Colonel Mustard, Reverand Green and John Body.
Players move from location to location through a roll of the die. If they land on an regular game space, they pick up a card and follow the instructions. Once a player reaches one of the locations, he or she uses one of his or her tools to uncover the clue there.
The special reverse reader can only be used with Inspector Brown, who tips players off to any false clues. When players visit John Body, they use their code breaking key to uncover where the culprit is hiding. All other suspects offer clues, which can be uncovered with the red reader magnifying glass. Once a player collects all eight clues and identifies the culprit from the six suspects introduced in the CLUE FX game – Rusty, Miss Peach, Lord [G]ray, Mrs. Meadow-Brook, Price Azure and Lady Lavender – the mystery is solved and the player wins the game.
[Source:
http://www.hasbro.com/media/pl/page.rel ... elease=321 ]