Farscape S04 E13 Terra Firma (3)

"My name is John Crichton, an astronaut. I'm just looking for a way home."

Moya arrives at Earth in present day, Christmas. The crew show their ships and technology to Earth's scientists. Crichton starts writing a journal. The creature left on board Moya by Grayza manages to get to Earth where it starts killing and hunting down Crichton.