Renia by Karl Forshaw

The Halls of Venn are the seat of both knowledge and power in the great continent of Luna Ruinam. Renia, a scribe with a tragic past, spends her days expertly copying books that do little to satiate her desire for knowledge. When a fateful commission lands on her desk, she finds herself tasked with transcribing a book coveted by assassins from the southern continent. Its theft throws the scribing halls into chaos and threatens to destroy the fragile peace that exists between their nations. Haunted by dreams of her past, Renia must learn to master her impulses and awaken her long dormant magical abilities if she is to prevent war. Fate, it would seem, is eager to grant her wishes. Yet she must risk everything to pursue it, and pay the bloody price it demands.

Phantom by Helen Power

Would you sell your hand for a million dollars? Regan "Roz" Osbourne is broke. Her ex-boyfriend won't take no for an answer, and no one is taking her artwork seriously. So when a mysterious stranger offers her a million dollars and safety from her unstable ex in exchange for her left hand, she can't afford to refuse. ​ Immediately following the amputation, she's racked with insufferable phantom limb pain. Desperate for relief, she enrolls in an experimental drug trial. But this drug has a peculiar side effect—she develops a psychic connection to her missing limb. She soon discovers that Chicago's long-dormant Phantom Strangler is now wearing her hand and is using it . . . to kill.