Marcia Clark

Marcia Rachel Clark (née Kleks, formerly Horowitz; born August 31, 1953) is an American prosecutor, author, television correspondent and television producer. She was the lead prosecutor with the O. J. Simpson murder case.
Clark appeared in the "Pretty Little Liars" episode "Now You See Me, Now You Don't" as Attorney Sidney Barnes in August 2013.
Clark later appeared in the 2016 miniseries "O.J.: Made in America".
Clark was born in Alameda, California.