In March 1988, Clyde A. Best
, then a student at Knox
, a private liberal-arts institution in Galesburg, Ill., beat Andrea Racibozynski, a 19-year-old freshman, to death with a brick in a glass-enclosed stairwell.
was sentenced to 60 years in prison in 1999 after pleading guilty but mentally ill.
Most notably, 9 of the 20 light bulbs in the stairwell were burned out or another 6 had been turned off, possibly by Best