Mister X, already familiar to many of Ravensburger's friends from Scotland Yard, is now up to no good in New York. He has already been sighted several times in Manhattan, and the NYPD has taken its best team of detectives with apprehending him.

The objective: 

One of the players is Mister X. Mister X moves without being seen, and he has to try to avoid his persecutors and not be discovered until the end of the game.Ig he manages this, he wins the game!

The other players are all detectives. They try to surround Mister X and move onto the field on which he is hiding. If they manage this, the detectives win the game.