How many letters does the top answer for “wrote double indemnity” have?

The most common answer is cain (4 letters).

Crossword clue: wrote double indemnity

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

cain 4 letters wd-fact-v3

(Old Testament) Cain and Abel were the first children of Adam and Eve born after the Fall of Man; Cain killed Abel out o

wilder 6 letters wd-fact-v3

United States filmmaker (born in Austria) whose dark humor infused many of the films he made (1906-2002)

wrote the double 67% similar → dostoyevsky

author of double indemnity 50% similar → cain, wilder

wrote double star 50% similar → heinlein

wrote the double-bass 50% similar → suskind

wrote the double helix 50% similar → watson