Beyond the Wall of Sleep

I've a very weird memory attached with this book! I had read this one during those sleepless nights and then, when I went to sleep, I screamed in my sleep. Everyone woke up with a shudder, but I couldn't remember why I screamed. I was probably having a weird dream about the imagery that was described in this book! It deals with paranoia and schizophrenia in a brilliant way! A weird and amazing experience! Classic Lovecraft horror!