The Edge Series by Ilona Andrews (pdf, epub, mobi)

Rose Drayton lives on the Edge, between the world of the Broken (where people drive cars, shop at Wal-Mart, and magic is a fairy tale) and the Weird (where blueblood aristocrats rule, changelings roam, and the strength of your magic can change your destiny). Only Edgers like Rose can easily travel from one world to the next, but they never truly belong in either.
Rose thought if she practiced her magic, she could build a better life for herself. But things didn’t turn out how she planned, and now she works a minimum wage, off the books job in the Broken just to survive. Then Declan Camarine, a blueblood noble straight out of the deepest part of the Weird, comes into her life, determined to have her (and her power).
But when a terrible danger invades the Edge from the Weird, a flood of creatures hungry for magic, Declan and Rose must work together to destroy them—or they’ll devour the Edge and everyone in it.


The Edge lies between worlds, on the border between the Broken, where people shop at Walmart and magic is a fairytale–and the Weird, where blueblood aristocrats rule, changelings roam, and the strength of your magic can change your destiny…
Cerise Mar and her unruly clan are cash poor but land rich, claiming a large swathe of the Mire, the Edge swamplands between the state of Louisiana and the Weird. When her parents vanish, her clan’s long-time rivals are suspect number one.
But all is not as it seems. Two nations of the Weird are waging a cold war fought by feint and espionage, and their conflict is about to spill over into the Edge—and Cerise’s life . William, a changeling soldier who left behind the politics of the Weird, has been forced back into service to track down a rival nation’s spymaster.
When William’s and Cerise’s missions lead them to cross paths, sparks fly—but they’ll have to work together if they want to succeed…and survive.


Audrey Callahan left behind her life in the Edge, and she's determined to stay on the straight and narrow. But when her brother gets into hot water, the former thief takes on one last heist and finds herself matching wits with a jack of all trades...
Kaldar Mar-a gambler, lawyer, thief, and spy-expects his latest assignment tracking down a stolen item to be a piece of cake, until Audrey shows up. But when the item falls into the hands of a lethal criminal, Kaldar realizes that in order to finish the job, he's going to need Audrey's help...


Charlotte de Ney is as noble as they come, a blueblood straight out of the Weird. But even though she possesses rare magical healing abilities, her life has brought her nothing but pain. After her marriage crumbles, she flees to the Edge to build a new home for herself. Until Richard Mar is brought to her for treatment, and Charlotte’s life is turned upside down once again.
Richard is a swordsman without peer, future head of his large and rambunctious Edger clan—and he’s on a clandestine quest to wipe out slavers trafficking humans in the Weird. So when his presence leads his very dangerous enemies to Charlotte, she vows to help Richard destroy them. The slavers’ operation, however, goes deeper than Richard knows, and even working together, Charlotte and Richard may not survive...