This is the sequel to the book "Xenolith" and continues the story of Dr. Frank and his search for Elizabeth, his believed to be dead wife who has actually crossed a trans-dimensional portal to another world. I enjoyed "Xenolith" tremendously, but confess to being disappointed with "Peregrin." In this volume the story gets too diluted, I believe, and that leaves the reader struggling to follow. Like a nylon rope beginning to unravel, the multitude of characters separates and so Sparrow tries to keep up with multiple stories at once. In addition there are new characters introduced to help resolve a plot that could have been, perhaps, better resolved in other ways. While I enjoyed Sparrow's writing and thought the plot was a good one, and even the confusion of multi-character story lines might have worked, but the conflict is not well resolved and I was very unsatisfied with the ending. While, I believe it was meant to build to a climactic battle which would thrust all of the characters back together to achieve victory (something reminiscent of the LOTR: Return of the King), the way Sparrow resolves it doesn't account well for all of the characters. This was very unsatisfying to me as a reader as I was seeking a bit more closure after following the story lines all the way to the end. A bit disappointing. ( )