The New Mutants and Hellions team up to find Surge's father, a wanted terrorist. When the human terrorists reveal the despicable nature of "Project Genesis" to the shocked New Mutants and Hellions, Laurie reveals her true nature and causes the groups to fight one another to the death, claiming that she does not care about the illegal human experimentation, only about finding and bringing in the human terrorists. Mercury, the only one immune to her powers, pleads with Laurie, as a friend, to stop. Laurie refuses, revealing that she always hated Cessily because she could not manipulate her with her pheromones. Given no other choice, Mercury stabs her through the chest, killing her and ending the fight.