The Green Bronze Mirror by Lynne Ellison
By Christopher Posner
Published: August 21, 2010.
Karen is playing on the beach when she finds an ancient mirror buried in the sand. She looks into it, and is transported back in time to the Roman empire. Finding herself a slave, she faces many hair-raising adventures in her struggle to return to her own time.
Read author Lynne Ellison's account of how she wrote this book on her website http://www.filedby.com/author/lynne_ellison/3820272