- Psychics and anti-psychics
- Life after death
- Shifts through time
- The joy of being in 2007 and reading SF that was written in the 1960's and set in 1992
I can't write more specifically about any of the above without going spoiler-y, but I'm in love with the writing in this book, with all of its hints and misdirections. SO GOOD. Everyone should read it!