Bob Shaw 
Dagger of the Mind [EPUB ebook] 

‘The entire head had been stripped of skin, creating a nightmarish sculpture in gelled blood…’The hideous apparition that confronted John Redpath almost defied description. It was the beginning of a horrific ordeal that would cause him to question his own sanity…A member of a telepathic research project, Redpath believes the cause to be side-effects from the experimental drugs he is taking — but then stranger things begin to happen. He wakes up to find himself in America…he is drawn to a local house occupied by a bizarre group of people leading an artificial and peculiar life…which events are really happening?Slowly an explanation emerges, more terrifying than anything he could have imagined…