A Simple Plan (1998)

Cautionary thriller. Two brothers and a friend find a crashed plane in snowy Minnesota woods with $4.4 million in cash aboard, and agree to hide it until the snow melts and see whether anyone comes looking. Sam Raimi, better known then for horror, films the slow slide from that agreement into paranoia with almost unbearable patience. Billy Bob Thornton earned an Oscar nomination as the slow, lonely brother, and Scott B. Smith was nominated for adapting his own novel. Watch this when you want the honest answer to the question every windfall daydream skips: who else knows, and can you trust them?