Cause for Alarm!

Bedridden and convinced he's dying, George Jones (Barry Sullivan) becomes certain his wife Ellen (Loretta Young) and his doctor are planning to murder him — so he writes the district attorney a letter accusing them. Then he drops dead, and the letter is already in the mail. Ellen's desperate afternoon chasing a single envelope through a sunlit suburb makes for one of the tightest domestic noirs of the early 50s. Tay Garnett directed for MGM. The film is in the public domain.