Episode Title:The Gloria Scott.Episode Description:Victor Trevor comes to Holmes believing his father is being blackmailed by a man named Hudson. Victor found a cryptic message in his father's papers which contains the words Gloria and Scott. Following the clues, Holmes discovers that Mr. Trevor was once (falsely) convicted and transported on a prison shuttle, the Riley (the ship's full name was the Gloria Scott Riley). However, a fellow prisoner started a riot on the spaceship and left it adrift in space while he and the other prisoners fled to Earth and started new lives.