Season: 4

Original Airdate: August 11, 2000

Writer(s): Robert C. Cooper

Director(s): Martin Wood

Guest Stars
Marina Sirtis as Dr. Svetlana Markov
Tom McBeath as Colonel Maybourne
Gary Jones as Technician
Darryl Scheelar as Co-Pilot

Synopsis: SG-1 joins forces with a beautiful Russian scientist to investigate a rogue Stargate in Siberia, linked to a mysterious water planet. The team must venture via submarine to the water planet, where they encounter an unexpectedly terrifying alien precense that just might destroy them all.