Adamant

Ever since a devastating magical war tore apart Ada Fletcher's homeworld, she and her family have lived under cover on the low-magic Earth. Stuck in a dead-end job in London, Ada has spent her life hiding her true identity--and her magic. Until she loses her job, is chased by a rampaging monster, and is arrested as a prime suspect for a murder she had nothing to do with. It really isn't Ada's day. Kay Walker, grandson of the Inter-World Alliance's late founder, expects to spend his first week as an Alliance employee chasing monsters out of the Passages between worlds, not solving his supervisor's murder or questioning a strange, fierce young woman he arrested in the Passages. Killer or not, her abilities raise questions about the Alliance's history, and the closer he gets to the truth, the higher the body count rises. The last thing Ada wants to do is help the infuriating Alliance guard who arrested her, but it soon becomes clear that the Alliance knows too much about Ada's magic. More, in fact, than she knows herself. One thing’s certain: she’s not the only one keeping secrets. And the worst monsters look human…