Dr. Orinsky, one of the NASA scientists who examined Patrick, discovers something amiss about his blood sample and desperately tries to contact Cromwell. However, Orinsky is ambushed and disemboweled by something formed from Patrick's blood. Laura discovers that the DNA in Orinsky's wounds is distinct from Eve's, making her an unlikely culprit in the murder. This prompts Colonel Burgess, the military supervisor in charge of her project, to reunite her with Press Lennox to contain the new threat. Press and Laura seek out Cromwell, Orinsky's former professor, and learn that he discovered that the alien species had attacked and destroyed Mars in ancient times. Because of his fears that alien DNA might remain on Mars to infect anyone who visited the planet in the future, Cromwell urged the government to abort the mission, but was institutionalized to permanently silence him.