Lieutenant Marple was a male Human Starfleet officer who lived during the mid-23rd century. He served in the operations division aboard the USS Enterprise under Captain James T. Kirk, as one of the ship's security officers. In 2267, Marple was one of four security guards who made up the nine-man landing party that participated in a survey mission of Gamma Trianguli VI. Following the death of Hendorff, Kirk ordered Marple and Mallory to make a full reconnaissance of the village near their location, careful to avoid contact with the humanoid natives.