Pseudonym for a
thriller/
espionage book author, one that eludes us even today - there appears to be only speculation as to who the man (?) truly is.
He wrote some good books, of the mostly known ones wereShibumi, Incident at Twenty-Mile, The Main and The Summer of Katya.
The amazing thing is, although he's been writing books since 1972, very little is known about this author.. This (according to his critics) could be due to sociopathic tendencies, as portrayed by many of the characters in his books; Me, I think he just craves privacy.