Mr. Jack is a detective and deduction game for two people. The game is easy to learn. It's very interesting, tricky and exciting. I particularly like that the two players have different roles. It is either Mr. Jack, or supervisor / officer. There are eight different people / characters in London or on the field. One of them is Mr. Jack. The inspector knows at the beginning of the game not what character is Mr. Jack. The game is played over eight rounds or less. Here, the inspector must expose through a process of elimination Mr. Jack and then catch. Mr. Jack in turn must try to escape, but this is very difficult, so most of the players wins the inspector. As the game (sometimes 40 minutes) will take you with 30 minutes of a very long, you play like this again and can then play the other role. The game is the winner of the "International Gamers Awards" 2007 in the category 2-Player. From me 5 stars.