The Woman in the Wardrobe features a few elements I usually find myself disliking, to wit an amateur detective full of bombast, wit and ego, and a locked-room mystery. There are some definite similarities with Gideon Fell… but the writing style is so breezy — and the included caricatures of various characters so full of life — that it swept me right through my usual objections. It’s one of those with a clever trick ending (as most locked-room mysteries are) and it worked reasonably well.
I can’t say I like the amateur detective, but at least the narration knows he’s a bit of an ass. It doesn’t push too hard on his genius, though there is a very Sherlockian scene with a reverie over a pipe just as the case is reaching its conclusion… It’s all contrived, of course, but it’s fun. It mostly helps that it doesn’t take itself too seriously.