Lieutenant Watley was a female Human Starfleet officer who lived during the mid-23rd century. During the 2260s, she served aboard both the USS Lexington and USS Enterprise; during her latter assignment, she was assigned to the sciences division. Watley was played by actress Deirdre L. Imershein. The Department of Temporal Investigations novel Forgotten History gives her the actress' first name and a sister, Elaine (β), who also served on the Enterprise during that time period.