Donald Westlake in his Greenwich Village home. (Louis Lanzano/AP)
Prolific mystery author Donald E. Westlake died of a heart attack while vacationing in Mexico. He was 75. Westlake reportedly wrote more than 100 books in his career, under both his own name and a variety of pseudonyms. Fans can look forward to one more novel, Get Real (Grand Central, $23.99), to be released in April.