The Red Signal: A Novel

This adaptation includes an extra dinner guest named Violet Eversley, who is in Christie's text. She's a bit of a bore and a chatterer. But much of her dialogue and Sir Alington's dialogue is lifted directly from the text. This adaptation also makes a very subtle and smart alteration in that when German is talking about a previous moment in which he felt the red signal,. He talks about having been attacked in a tent when he was in Mesopotamia.