From the back of the book:
Eleven years ago The Gemini killer finished with his trail of death, leaving twenty-six mutilated bodies, all with a name beginning in 'K'.

Eleven years ago The Gemini had been hit with a rain of bullets when climbing the Golden Gate Bridge. His body was never found.

Now, as new victims fall, Detective Kinderman is faced with an impossible fact: the new Gemini could not be or have known about the old. When the exorcism was performed, the evil did not die.

Left at the book exchange stand near Factorie and Converse on level 3.

Release #21 for the 2019 One Word Challenge.

I loved the grittiness and mystery of The Exorcist, and Legion is more of the same, but not quite with the same level of mystery or groundbreaking originality that The Exorcist had. Still a fun read if you enjoy the genre. Reminded me a little of Thomas Harris' Hannibal series of books.

Enjoyed the book!