Stargate SG-1 Season 4
O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion. A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.
01. Small Victories (2)
O'Neill and Teal'c risk their lives to keep the Replicator bugs from gaining a foothold on Earth, while Carter helps the Asgard fend off a Replicator invasion.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Colin Cunningham
Paul Davis
Dmitry Chepovetsky
Boris
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
Kis Yurij
Yurij
Robert C. Cooper
Writer
Martin Wood
Director
02. The Other Side
A warring alien race offers to exchange their advanced technology for Earth's help in defeating their enemy.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
René Auberjonois
Alar
Amanda Tapping
Samantha Carter
Anne Marie DeLuise
Farrell
Michael Shanks
Daniel Jackson
Gary Jones
Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
Stephen Park
Controller
Kyle Cassie
Eurondan Soldier
Kris Keeler
Zombie Pilot
Peter DeLuise
Airman
Mike Dopud
Eurondan Soldier
Brad Wright
Writer
Peter DeLuise
Director
03. Upgrades
A Tok'ra archaeologist arrives at the SGC with newly discovered technology, giving the SG-1 team superhuman powers.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Vanessa Angel
Anise / Freya
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
Fraser Aitcheson
Jaffa Commander
Shawn Reis
Jaffa
Bill Nikolai
Technician Vern Alberts
Kristina Copeland
Waitress
Frank Topol
Big Guy
Laara Sadiq
Technician Davis
Daniel B. Melles
Special Forces Soldier #1
Tracy Westerholm
Special Forces Soldier #2
04. Crossroads
Teal'c is reunited with his lost love -- a woman who claims to have found a way to communicate with her symbiote and defeat the Goa'uld.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Ron Halder
Cronus
Amanda Tapping
Samantha Carter
Musetta Vander
Shan'auc
Michael Shanks
Daniel Jackson
Vanessa Angel
Anise / Freya
Peter Wingfield
Hebron / Tanith
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Sean Millington
Ronac
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Peter DeLuise
Tok'ra Guard
Katharyn Powers
Writer
Peter DeLuise
Director
05. Divide and Conquer
When a member of the SGC tries to kill a Tok'ra, it is revealed that O'Neill and Carter may be victims of an untraceable form of Goa'uld mind control.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Phillip Mitchell
Jaffa #2
JR Bourne
Martouf / Lantash
Amanda Tapping
Samantha Carter
Andrew Jackson
Per'sus
Michael Shanks
Daniel Jackson
Vanessa Angel
Anise / Freya
Roger Allford
The President
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Kirsten Robek
Lieutenant Astor
Bill Nikolai
Technician Vern Alberts
Steve Makaj
Colonel Robert Makepeace
Tor Alexander Valenza
Writer
Martin Wood
Director
06. Window of Opportunity
O'Neill and Teal'c are caught in a time loop in the SGC, and must relive the same 10 hours over and over again.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Daniel Bacon
Technician
Michael Shanks
Daniel Jackson
Robin Mossley
Malikai
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
Bill Nikolai
Technician Vern Alberts
Peter DeLuise
Airman
Cam Cronin
Door Airman
07. Watergate
The Russians recover a Stargate from the bottom of the ocean, and turn to the SGC for help when their experiments go awry.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Marina Sirtis
Svetlana Markov
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Gary Jones
Walter Harriman
Tom McBeath
Harry Maybourne
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Darryl Scheelar
Co-pilot
Robert C. Cooper
Writer
Martin Wood
Director
08. The First Ones
Dr. Jackson is taken captive by an Unas while on an archaeological dig. The SGC mounts a rescue operation, but discovers a danger of their own.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Steve Bacic
Major Coburn
Amanda Tapping
Samantha Carter
Barry W. Levy
Major Hawkins
Vincent Hammond
Unas
Michael Shanks
Daniel Jackson
Gary Jones
Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Jason Schombing
Robert Rothman
Dion Johnstone
Chaka
Russell Ferrier
Captain Griff
Rob Lee
Pierce
Todd Scott
Airman Loder
Peter DeLuise
Writer
Peter DeLuise
Director
09. Scorched Earth
SG-1 is caught in a conflict between two civilizations trying to colonize the same planet.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Marilyn Norry
Hedrazar
Amanda Tapping
Samantha Carter
Brian Markinson
Lotan
Michael Shanks
Daniel Jackson
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Alessandro Juliani
Eliam
Rob Court
Caleb
Nikki Smook
Nikka
Joseph Mallozzi
Writer
Martin Wood
Director
10. Beneath the Surface
The members of SG-1 are used as forced labor in an underground alien facility after their memories are erased by the ruling elite.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Laurie Murdoch
Administrator Calder
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Kim Hawthorne
Kegan
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Alison Matthews
Brenna
Russell Ferrier
Major Griff
Brian Drummond
Attendant
Jason Griffith
Worker
Ocean Bloom
Worker with water
Heather E. Ash
Writer
Peter DeLuise
Director
11. Point of No Return
SG-1 investigates a conspiracy theorist who has detailed knowledge of the Stargate program.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Robert Lewis
Peter Tanner
Amanda Tapping
Samantha Carter
Matthew Bennett
Jared Kane
Michael Shanks
Daniel Jackson
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Willie Garson
Martin Lloyd
Mar Andersons
Bob
Francis Boyle
Sgt. Peters
12. Tangent
A test gone wrong leaves Jack and Teal'c marooned in space aboard a damaged prototype attack ship
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Peter Williams
Apophis
Michael Shanks
Daniel Jackson
Colin Cunningham
Paul Davis
Steven Williams
General Vidrine
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter
Don S. Davis
George Hammond
Michael Cassutt
Writer
Peter DeLuise
Director
13. The Curse
When his former mentor dies, Dr. Jackson returns to his roots -- and discovers an ancient Egyptian artifact containing a Goa'uld parasite.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Anna-Louise Plowman
Sarah Gardner
Amanda Tapping
Samantha Carter
Lorena Gale
Curator
Michael Shanks
Daniel Jackson
Ben Bass
Dr. Steven Rayner
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
David Abbott
David Jordan
14. The Serpent's Venom
SG-1 must stop Apophis and Heru-ur from forming an alliance of their powerful forces, while Teal'c is captured and tortured by the Goa'uld.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Paul Koslo
Terok
Amanda Tapping
Samantha Carter
Peter Williams
Apophis
Daniel Bacon
Technician
Michael Shanks
Daniel Jackson
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter
Don S. Davis
George Hammond
Douglas Arthurs
Heru'ur
Obi Ndefo
Rak'nor
Art Kitching
Ma'kar
Wren Roberts
Red Guard #1
Nicholas Harrison
Red Guard #2
Kyle Hogg
Jaffa boy
Chris Duggan
Heru'ur's Jaffa
Peter DeLuise
Writer
Martin Wood
Director
15. Chain Reaction
SG-1 must adjust to a new commanding officer when General Hammond steps down -- but O'Neill discovers foul play behind the general's resignation.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Ronny Cox
Senator Robert Kinsey
Michael Shanks
Daniel Jackson
Lawrence Dane
Major General Bauer
Gary Jones
Walter Harriman
Tom McBeath
Harry Maybourne
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
Patti Allan
Mrs. Kinsey
Gina Stockdale
Kinsey's Maid
Mark Pawson
Reporter
Norma Jean Wick
Reporter
Jacquie Janzen
Aide
16. 2010
Ten years into the future, the former members of SG-1 must send a message into the past to prevent the extinction of the human race.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Ronny Cox
Senator Robert Kinsey
Michael Shanks
Daniel Jackson
Christopher Cousins
Ambassador Joseph Faxon
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Dion Luther
Mollem
David Neale
Dialer
Linnea Johnson
SGC Tour Guide
Bryce Hodgson
Kid
Liza Huget
Waitress
Brad Wright
Writer
Andy Mikita
Director
17. Absolute Power
Jackson's teammates notice a disturbing change in him when he is reunited with the Harcesis child and given the Goa'uld genetic memory.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Peter Williams
Apophis
Michael Shanks
Daniel Jackson
Colin Cunningham
Paul Davis
Steven Williams
General Vidrine
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Erick Avari
Kasuf
William deVry
Aldwin
Yvette Faulkner
Rear Tech
Nancy Gates
Shifu
Michelle Harrison
Assistant
Yee Jee Tso
Technican
Jenn Forgie
Technican
Coleen Christie
News Reporter Amy Jensen
June B. Wilde
Maid
Robert C. Cooper
Writer
Peter DeLuise
Director
18. The Light
SG-1 finds a deserted Goa'uld palace, where a beautiful device causes suicidal tendencies.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Kristian Ayre
Loran
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Link Baker
Lieutenant Barber
James Taylor Phillips
Writer
Peter F. Woeste
Director
19. Prodigy
Carter must help keep a promising young cadet from throwing away a future at the SGC. O'Neill and Teal'c encounter a dangerous life form at an offworld research base.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Michael Kopsa
General Kerrigan
Amanda Tapping
Samantha Carter
Bill Dow
Bill Lee
Michael Shanks
Daniel Jackson
Roger Haskett
Doctor
Hrothgar Mathews
Dr. Hamilton
Michael E. Ryan
General Ryan
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Don S. Davis
George Hammond
Elisabeth Rosen
Jennifer Hailey
Russell Ferrier
Major Griff
Keith Martin Gordey
Professor Monroe
Ivon R. Bartok
Cadet
20. Entity
The SGC is invaded by an alien life force that takes up residence in the base computer system -- and in Major Carter.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Gary Jones
Walter Harriman
Teryl Rothery
Janet Fraiser
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Dan Shea
Sgt. Siler
Don S. Davis
George Hammond
Peter DeLuise
Writer
Allan Lee
Director
21. Double Jeopardy
SG-1 must rescue an alien world from the Goa'uld -- with help from an unexpected source. Teal'c seeks revenge on the System Lord Cronus for the murder of his father.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Michael Shanks
Daniel Jackson
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter/Selmac
Jay Brazeau
Harlan
Don S. Davis
George Hammond
Belinda Waymouth
Ja'din
Bill Croft
Sindar
Tracey Hway
Hira
Michael Jonsson
Juna warrior
Ron Halder
Cronus
Daniel Bacon
Technician
Matthew Harrison
Darian
John DeSantis
Jaffa
Paul Stafford
Jaffa
Artine Brown
Pilot
Robert C. Cooper
Writer
Michael Shanks
Director
22. Exodus (1)
SG-1 helps to evacuate the Tok'ra to a new base -- but matters are complicated when a spy reveals their location to Apophis. The team attempts a daring plan to take out the Goa'uld's powerful fleet.
Richard Dean Anderson
Jack O'Neill
Christopher Judge
Teal'c
Amanda Tapping
Samantha Carter
Peter Williams
Apophis
Michael Shanks
Daniel Jackson
Kirsten Alter
Tok'ra #1
Peter Wingfield
Hebron / Tanith
Gary Jones
Sgt. Walter Harriman
Teryl Rothery
Dr. Janet Frasier
Tony Amendola
Master Bra'Tac
Carmen Argenziano
Jacob Carter
Don S. Davis
George Hammond
Anastasia Bandey
Tok'ra #2
Malik McCall
First Guard
Kenton Reid
Red Jaffa
Paul Norman
Apophis' Red Guard