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Who wrote the screenplay for Double Indemnity?

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Billy Wilder poses in a suit and hat, leaning against a streetlamp with a sign reading Sunset Blvd. in a promotional photo for the film Sunset Boulevard. — Billy Wilder Billy Wilder in a promotional photograph for *Sunset Boulevard* (1950), which he directed.

The screenplay for the 1944 film Double Indemnity was written by director Billy Wilder and writer Raymond Chandler. The film was adapted from a short novel of the same name by James M. Cain.123