Samuel T. Cogley (played by Elisha Cook, Jr.) was a 23rd century lawyer who once defended Captain James T. Kirk when Kirk was put on court martial for the murder of Lieutenant Commander Ben Finney.
Cogley was strong-willed and old-fashioned, preferring paper books to computers. After Lieutenant Areel Shaw arranged for him to defend Kirk, Cogley moved into Kirk's quarters on the Enterprise, bringing his extensive collection of law books with him. His collection included a copy of the work of the Tribunal of Alpha III in its original language.
During the trial, Cogley convinced the court to reconvene on board the Enterprise so that Kirk could face his accuser (the Enterprise computer). Cogley was able to prove Kirk's innocence by showing that the computer record had been altered to falsely implicate Kirk. Eventually, with the help of Dr. Leonard McCoy and the use of a white sound device, Cogley and Commander Spock were able to prove that Finney had faked his own death in order to frame Kirk, and was in fact alive and hiding on the Enterprise.
After Kirk was aquitted, Cogley planned to defend Finney against the charges related to his plot against Kirk. He was confident of an aquittal. (TOS: "Court Martial")
- Cogley is the protagonist of the Pocket Books novel The Case of the Colonist's Corpse.