When a guy tries to roofie her, young surgeon Ryn Wilkie is catapulted onto a parallel Earth that’s at the technological level of the late 1800s. Confronted with a society where women's voices are stifled and medical advancements are non-existent, Ryn's despair turns to determination when she discovers her ability to flip between worlds. Can she leverage her abilities to advance their technology and challenge those deep-seated gender biases, or will the weight of their traditions prove insurmountable? And, can she stop the guy who attacked her before he hurts other women? "Jump" into the first book of the Worlds of Ryn Wilkie. “Some of the best Sci-Fi I’ve read in years.” “…reminds me of Heinlein and Asimov…”

World-walking young surgeon Ryn Wilkie is trying to finish her residency here on Earth while also bringing modern medicine and antibiotics to a parallel but somewhat primitive Earth. She wants to improve the plight of women on that world - where they‘re treated as if they're property. It’s a world at about the technological level of our late 1800s. But she can find gold there in the same locations that history tells her they found it on Earth. It’s also a place where a roll of aluminum foil is worth a small fortune! Meanwhile, back on Earth, the men who tried to rape her and her friend Keilly are still trying—but now they want to murder the two young women afterward. Oh, and she accidentally discovers another parallel Earth. One that doesn't seem to have any humans... Travel with Ryn to worlds full of terror and promise. “Some of the best Sci-Fi I’ve read in years.” “…reminds me of Heinlein and Asimov…”

Surgeon and world-walker Ryn Wilkie faces her toughest trials yet—across multiple worlds and in matters of the heart. Jack Varga, hiding secrets of his own, wants more than friendship, but how can he measure up to a woman who leaps between parallel Earths? As Ryn tackles her surgical fellowship on Earth, and pushes to elevate the people of Cearth, the steam-powered parallel world that’s stuck in the late 1800s, her efforts to raise everyone’s standard of living might unlock greater freedoms for women. When her brother mishandles some gold she gave him, putting a ruthless gang on her trail, danger spills across all three worlds—including the one empty of humans but rich with species extinct on her home planet. It seems as if everyone Ryn loves is in danger. Travel with Ryn to worlds full of terror and promise. “Some of the best Sci-Fi I’ve read in years.” “…reminds me of Heinlein and Asimov…”