Ingen har sett allt is a series taken at a mental hospital in Stockholm called Enskede-Skarpnacks psykiatriska sekto, which comprised the third book of the trilogy of work by photographer, Anders Petersen, following Fängelse (1984), photographs taken at a prison, and Rågång till Kärleken (1991), photographs of a nursing home. What lies in common with these three books is that their subjects are worlds separated from society and only known by a limited number of people such as family members and friends of the inhabitants. Since these places are largely invisible, we tend to form images of them in our minds. Needless to say, these are biases.