Farscape (1999)

S4E13 Terra Firma (3)

Moya reaches Earth during the Christmas season, and the crew showcases their ship and advanced technology to scientists on the planet. Meanwhile, Crichton begins documenting his experiences in a journal. However, the creature that Grayza left aboard Moya manages to make its way to Earth, where it begins to stalk and eliminate targets, specifically targeting Crichton.