In Corey J. White’s Killing Gravity, we were introduced to a living weapon, voidwitch Mariam Xi, better known as Mars. The shadowy interstellar government agency MEPHISTO raised her from childhood and turned her into a psychic living weapon that Jean Grey and the Phoenix Force would respect as an equal. Mars’ powers are ferocious and dangerous even under tabs, becoming fearsome when truly unleashed. Mars is untrusting of strangers, having been burned too many times. The events of Killing Gravity hit Mars where she is most vulnerable, in her inability to trust people. Thus a raucous and audacious space opera has as its core a very human story of Mars learning to trust other people, and taking steps for her to try and ensure her autonomy.
(Spoilers for Killing Gravity below.)