Who Mourns for Adonais?

"Who Mourns for Adonais?" is a second season episode of the original science fiction television series Star Trek. It is episode #31, production #33, first broadcast September 22, 1967, and repeated May 10, 1968. The allusion is to the 1821 elegy Adonais by Percy Bysshe Shelley. It was written by Gilbert Ralston and Gene L. Coon, and directed by Marc Daniels.
In this episode, the crew of the Enterprise are held captive by an alien who turns out to be the Greek god Apollo.
Plot
On stardate 3468.1, the Federation starship USS Enterprise, under the command of Captain James T. Kirk, is nearing orbit of Pollux IV, a Class M planet, for a survey. Suddenly, a huge energy field in the shape of a glowing green hand appears and grabs the Enterprise; halting its movement. Kirk tries to wriggle the ship free of the hand by using the ship's impulse engines, but to no avail.
A humanoid apparition, wearing a golden...