Dr. Evie Calumet was a theoretical physicist who served aboard the Ares One crew.
Evie repeatedly requested access to M. Mihalyova's AI named R's codes. Before the launch she went to Mihalyova with concerns about R's assessment of the crew. Evie died on launch day, due to an electrical fire, a sprinkler, and a wet staircase. This may not have been accidental, as Mihalyova previously mentioned an accident may occur if she found out R's true nature.