Synopsis by Hal Erickson
It seems there is this cursed ruby, the Danaau, that for decades has been the scourge of the family of Cabot Cove physician Seth Hazlitt (William Windom). Many people who have owned the Daanau Ruby in the past have come to a violent end, at it looks as though the next victim of the curse will be Seth's sister-in-law Alice (Jane Windsor). Instead, Seth's brother (Alice's husband) is the one who ends up strangled to death--and now the ruby has vanished. If ever Jessica Fletcher (Angela Lansbury) was needed, it is right now!