A Question of Boundaries Book One - A Question of..., #1

By 1895, the United States is in the 80th year of the isolation imposed by King Thomas I and upheld by his successors. But some are chafing under the shortages and restrictions, and when inventor Dr. Featherstone declares he has found a way to override all borders, there are those who applaud the discovery and those who fear it. When Dr. Featherstone fails to return home for an important scientific gathering, his daughter Caroline enlists the help of the member of Parliament from Charlotte, Nathan Llewellen.
As the two search for the kidnappers, Caroline is plunged into a world where travel to other realities is possible in the blink of an eye, and people can assume the forms of fearsome as well as familiar animals...and where love comes at the most unexpected times and places. Nathan's peculiar gift might cost Caroline her life, but she has already lost her heart.