A group of men trap wild animals in Africa and sell them to zoos. Will the arrival of a female wildlife photographer change their ways?

In Victorian era London, the inhabitants of a family home with rented rooms upstairs fear the new lodger is Jack the Ripper.

10 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, including Judge Francis J. Quinncannon and Dr. Edward G. Armstrong, and 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.