This game, based on popular 1920s and 30s fictional detective Philo Vance, revolves around each player trying to collect a set of clue cards which matches one of ten suspect, whose attributes are kept hidden in play. After collecting a set of clues, a player may accuse one of the suspects, and if enough of their clues match the suspect, the suspect can be arrested and brought to court. If the player is able to present sufficient additional evidence, the suspect is convicted and the player wins.
While this game has been compared to Clue, there aren't many similarities. Instead of trying to gather evidence to identify a specific suspect selected and hidden at the start of the game (i.e. Col. Mustard with a Cuisinart in the Rumpus Room), the goal of this game is to wander around collecting clue cards until a picture of one of the ten suspects comes into focus, and then try to gather enough clues to put them away. It's actually kind of a perversion of justice if you think about it.
Another odd element of the game is that landing on other players' pieces (i.e. "bumping") can serious screw with the player, so there's an interesting screw-your-neighbor aspect to play. Aside from that, the fact that repeated plays will almost certainly result in players memorizing the cards means that the replay value might be limited, but the bumping might actually keep the play interesting.