Hush Money by Robert B. Parker

Hush Money (Spenser Mysteries) - Hawk asks Spenser to look into Robinson Nevins’s denial of tenure.  Nevins is the son of Hawk’s mentor and has been accused of being the lover of a recent suicide of gay activist, Prentice Lamont.  His investigation uncovers blackmail by Prentice and prejudice on all sides of racism, feminism, academics as well as the gay community.  Susan also asks him to investigate the stalking of a friend, who when Spenser rejects her advances begins stalking him.