Much has been written about Jayson Blair, the young, talented, African-American journalist who brought shame to the New York Times by fabricating facts and stealing the work of others. But I've seen hardly anything written about Macarena Hernandez, the young, talented, Latina journalist who first brought suspicion of Blair's plagiarism to light. I know her well. I am her mentor. In 1997, the summer before she and Blair were summer interns in a program for minority journalists at the New York Times, she worked as an intern at this newspaper, with me as her guide. Her story needs to be...