Dr Elizabeth Olivet is a fictional character on the TV crime drama Law & Order. She was portrayed by Carolyn McCormick from 1991 to 1997 and in 1999. The character was revived in 2002, although her appearances became much more infrequent; her last appearance on Law & Order occurred in 2009. Since the cancellation of Law & Order, Olivet has continued to be seen very occasionally on Law & Order: Special Victims Unit, with her most recent appearance taking place in 2018.