Crossword clue: author of psycho
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
bloch
5 letters
wd-fact-v3
United States composer (born in Switzerland) who composed symphonies and chamber music and choral music and a piano sona
hitchcock
9 letters
wd-fact-v3
English film director noted for his skill in creating suspense (1899-1980)