The machine-gun murders of seven men on the morning of February 14,
1929, by killers dressed as cops became the gangland crime of the
century."" Or so the story went. Since then it has been featured in
countless histories, biographies, movies, and television specials. 'The
St. Valentine's Day Massacre, ' however, is the first book-length
treatment of the subject, and it challenges the commonly held assumption
that Al Capone ordered the slayings to gain supremacy in the Chicago
underworld.""