Merrick can be an arousing writer when he wants to. This one fell a bit short though. There's a lot of sex and sensuality of course, like in all of his books, but not as subtle as in the other books that I read from him.
What bothered me the most though about 'A Mesaure of Madness' was the constant doubt and worrying from the main character, Phil.
As a reader you spent most of the time in Phil's head and that's a very troubled, tiring and eventually boring place to be.
As a Summer read I got through to it in the end, but only just.