How to play Clue Rivals Edition

About Clue: Rivals Edition, from BoardGameGeek:

It's the Clue game that has 2 players going head-to-head in a battle to solve the mystery! In this suspenseful board game, players have to find out which suspect is responsible for killing Mr. Boddy in his mansion. Get the scoop on the character who did it, which item they used, and the location in the room where they committed the crime. Was it Mr. Green with the wrench by the coffee table? Did Dr. Orchid use the dagger next to the fireplace? Eliminate information throughout the game in this whodunit. When a player is ready to make an accusation, they secretly look at the cards placed in the evidence folder to reveal Who, What, and Where. A correct accusation wins the game. Includes a gameboard, 19 clue cards, 2 plastic pawns, 6 character tokens, 6 zinc weapons, evidence folder and die