California native Marcia Clark is the author of Guilt by Association, Guilt by Degrees, Killer Ambition, and The Competition, all part of the Rachel Knight series. A practicing criminal lawyer since 1979, she joined the Los Angeles District Attorney s office in 1981, where she served as prosecutor for the trials of Robert Bardo, convicted of killing actress Rebecca Schaeffer, and, most notably, O. J. Simpson. The bestselling Without a Doubt, which she cowrote, chronicles her work on the Simpson trial. Clark has been a frequent commentator on a variety of shows and networks, including Today, Go...