Norton Glover finished reading Plague of Pythons by Frederik Pohl
A story of mind control from an old SF legend. In a near-future post-apocalyptic dystopia, a man discovers the cause of an unending series of possessions.
For an early 60s sci-fi, it was surprisingly dark and nihilistic. The ending was quite bleak.
It's in the public domain, so I read the free, nicely formatted version from standardebooks.org