"This trademark application reminds us of a rather devilish puzzle"

So far, Professor Layton and the Spectre's Flute has been Japan-only, but a recently-unearthed trademark application shows that the DS adventure will come to North America.

Level-5 registered the trademark Professor Layton and the Last Specter recently, spotted by Siliconera, which all-but confirms the fourth DS game is coming to the West later this year.

We'll bring you more news as it arrives.

[source siliconera.com]