Over on LiveJournal, there is a balanced and good review of Gumshoe, by Grim of Postmortem Studios.
“There’s two separate things going on in these books. One is the presentation and ‘selling’ of the Gumshoe system, as a solution to a role-playing problem in pursuing investigations. The other is the presentation of Dave Allsop’s wickedly twisted imagination, which is as though Chris Morris was in a freak teleporter accident with Sean Hutson and a bag of genetically engineered cockroaches, only to materialise inside a David Lynch film.”