Who is Mark Cameron McConnell from Black Cross and what is their importance? Black_Cross_(novel) English & Literature Mark Cameron McConnell | Black Cross

Mark McConnell was born and raised in Georgia. His father was injured during World War One with mustard gas that left him blind, and this has caused Mark to pursue a medical career. He holds a Masters degree in chemical engineering. Mark was invited to assist war efforts at Oxford in London and accepted on the condition that he would work in a defense capacity only. When he is provided a sample of Sarin, Mark refuses to duplicate or create something as deadly for counter measures against the Nazis. This decision weighs heavily on him, so much so that he seeks out his brother regarding the matter, when even speaking of this is illegal. His brother advises him to create the gas. He later learns the Nazis have exceeded the Sarin gas with Soman and are testing this on the Jewish prisoners, so he is sent to a prisoner camp in Germany, along with Jonas Stern, to destroy the camp and kill everyone there, including the prisoners.