The 2015 assault of the inmate was so disturbing that 34 others — the entire cellblock — signed a letter to the corrections director. The warning from dozens of inmates at the Shelby County prison is the clearest indication yet that one of the five officers who took part in the violent beating of Nichols had an event in his past that should have raised concerns before he was hired as a police officer. Asked about his reaction when he learned of Haley’s involvement with Nichols, Cassie said, “I was totally shocked that it was him