And Then There Were None (1945)
Ten strangers are summoned to a remote island and while they are waiting for the mysterious host to appear, a recording levels serious accusations at each of the guests. Soon they start being murdered, one by one. As the survivors try to keep their wits, they reach a disturbing conclusion: one of them must be the killer. island, cat, guest, fisherman, whodunit, dinner, doctor, power outage, record, nursery rhyme, record player, duplicity, mystery killer, scheming, mind game, devon