Professor Layton and the Last Specter is a 2011 puzzle-adventure game for the Nintendo DS and the fourth entry in the Professor Layton series. Serving as a prequel to the original trilogy, it explores the early relationship between Professor Layton and his apprentice Luke Triton while featuring over 170 puzzles. The game also includes an extensive role-playing segment titled Professor Layton's London Life, which offers players over 100 hours of gameplay. However, this feature was omitted from the European release.
Last Specter is the fourth game in the Professor Layton series, and is a prequel that takes place three years before the first trilogy, detailing how Professor Layton met his apprentice, Luke Triton. The game includes over 170 puzzles.
Professor Layton and the Last Specter also includes an additional role-playing game entitled Professor Layton's London Life, available from the start of the game. London Life, in which players interact with various characters from the series in a town called `Little London`, was advertised to contain over 100 hours of content. London Life was removed from the European versions of the game in order to prevent a significant delay of the game's release for translation.