The blurb on the author's site is a sparse "A high tech ghost story..."

The main character is pushed around by the plot, by the other characters, and eventually by ghosts as well. A lot of the story is learning how he is going to react next.

While science-fiction-ish, the mechanism behind these new phones is not explained terribly well. "Deeper than atoms" or something like that. So it's not great sci-fi, and I didn't find it particularly great horror either.

I listened to the book as read by Jason Culp. He did a pretty good job with the main character and the narrative, but some of the supporting cast - especially the women - were not the best.

I'll stick with Greg Bear for science fiction, but will likely give his future horror titles a pass.