Raymond Chandler wrote "When in doubt, have a man come through a door with a gun in his hand." Killing Gravity author Corey White must be in some kind of ongoing existential crisis, because this book is Chandler's law padded out to novella length.

Mars Xi is a voidwitch, a telekinetic supersoldier forged by the sinister MEPHISTO arms combine. We meet her in a crippled corvette, life support on critical and waiting for the air to run out, when she's rescued by a freelancer scrap/salvage crew. We barely have time to meet nonbinary captain Squid, angry mercenary Trix, and deserter soldier Mookie when a man comes through the door with a gun in his hand a cruiser wormholes in and deploys space marines, and Mars kills them all with her telekinetic powers. Then it's off to a space station, where Mars meets a data broker, men with guns burst through the door, and Mars kills them all with her telekinetic powers. A clue leads her a mist-shrouded fungus planet, where Mars meets her sister, who freed her from the supersoldier training program, and she has brief reunion before a bounty-hunter with a sniper rifle kills Mars' sister, and Mars kills him with her telekinetic powers. When she finds out that Squid and co have been captured, Mars has only one course of action: Find the MEPHISTO flagship and use her telekinetic powers to kill them all!

Killing Gravity mimics the style of better authors: the blood-splattered excess of Alistair Reynolds, the gender-fluid killers of Yoon Ha Lee, the magical space cats of David Weber (yes, there's a magic space cat), but it adds up to an ADHD power fantasy, space opera by way of Michael Bay. I'll not be getting the rest of the series.