An actual play review of Trail of Cthulhu on rpg.net – 8/10.
The Gumshoe system is an investigation-oriented one, and this orientation is well suited to many Mythos scenarios. We enjoyed playing our characters and didn’t have too much trouble picking up the system. I’d recommend it. It might not work for some scenario types or for some groups, but my guess is that it would be EXCELLENT for many specific adventures which have interesting clues and a varied enough trail. I’d like to play again.