Murder on Black Friday (Nell Sweeney Mysteries, Book 4)    by P.B. Ryan
Price: $5.59 USD. 60790 words. Published by Patricia Ryan on July 9, 2010. .
In Book #4 of P.B. Ryan’s popular historical mystery series, Boston governess Nell Sweeney, along with roguish Harvard professor and forensic scientist Will Hewitt, investigates the deaths of two men who committed suicide--or did they?--when the gold market crashed in 1869. Originally published by Berkley Prime Crime, a division of Penguin Group, Inc.