Mrs Rogers (Endless Night)

In the novel Endless Night, Mrs Rogers (christian names unknown) is Michael's mother and one of the few people who knows him well. She worked hard to get her son a proper education since her husband was often drunk.

Role in the novel (warning; may contain spoilers)
Since Mrs Rogers knew Mike so well, she knew that, as a child, he had drowned a school friend only to get a wristwatch. When Mike's mother asked him where he had gotten the watch, Mrs Rogers knew that Michael was lying.

However, Mrs Rogers wasn't the only person to know what Mike had done. When Mike's heiress wife had died, Michael's friend Santonix yelled at him before dying. At first Mike didn't understand, but then he realized that both Santonix and Mrs Rogers knew that he had killed Ellie.