In Knucklehead we meet Marcus Hayes, a black law student who struggles, sometimes unsuccessfully, with the impulse to confront everyday bad behavior with swift and antisocial action. The cause of this impulse is unknown to him.

When Marcus unexpectedly becomes involved with the brilliant and kind Amalia Stewart, her love and acceptance pacify his demons. But when his demons return, he is no longer inclined to contain them.

(Source: publisher's website)