Chrysalis is a time-travel/science fiction novel. A physicist discovers time-traveling anti-matter particles and uses them to build a time machine. Needing to be surrounded by both metal and water, he tests it on a nuclear submarine--intending to go only a few minutes back in time. An accident during the experiment sends them back to eighth century Ireland in the midst of the first Viking invasion. Meanwhile, in Ballycastle, Ireland, Avelyn is a beautiful young Druidess, and ward of the Monastery. An outcast to the village, when the Vikings attack she seeks a means to oppose them and hopes to enlist the help of the time-traveling "sorcerers" from the future.