Blue Light is a science fiction novel by American writer Walter Mosley, published in 1998 by Little Brown & Co.

This power is defined as full actualization of humankind, with strengths, understandings and communication abilities that exceed our normal capabilities.

The people touched by the light in the novel were soon referred to as "Blues" and were segregated from society because of their new and improved super human powers.

The Gray Man is Horace LaFontaine, a character in the novel who was struck by the light at the moment of his death.

[3] The reviews also compared this novel to his other famous books the Devil in a Blue Dress and Futureland: Nine Stories of an Imminent World.