S01E12: Datalore
Stardate: 41242.4. While exploring his homeworld, the crew of the Enterprise find android parts that are identical to Data's. When assembled, an 'evil' twin of Data named Lore is revived.
Previous Episode 
Season 1
Encounter at Farpoint
S1E1 / 28 Sep 1987
The Naked Now
S1E2 / 05 Oct 1987
Code of Honor
S1E3 / 12 Oct 1987
The Last Outpost
S1E4 / 19 Oct 1987
Where No One Has Gone Before
S1E5 / 26 Oct 1987
Lonely Among Us
S1E6 / 02 Nov 1987
Justice
S1E7 / 09 Nov 1987
The Battle
S1E8 / 16 Nov 1987
Hide and Q
S1E9 / 23 Nov 1987
Haven
S1E10 / 30 Nov 1987
The Big Goodbye
S1E11 / 11 Jan 1988
Datalore
S1E12 / 18 Jan 1988
Angel One
S1E13 / 25 Jan 1988
11001001
S1E14 / 01 Feb 1988
Too Short a Season
S1E15 / 08 Feb 1988
When the Bough Breaks
S1E16 / 15 Feb 1988
Home Soil
S1E17 / 22 Feb 1988
Coming of Age
S1E18 / 14 Mar 1988
Heart of Glory
S1E19 / 21 Mar 1988
The Arsenal of Freedom
S1E20 / 11 Apr 1988
Symbiosis
S1E21 / 18 Apr 1988
Skin of Evil
S1E22 / 25 Apr 1988
We'll Always Have Paris
S1E23 / 02 May 1988
Conspiracy
S1E24 / 09 May 1988
The Neutral Zone
S1E25 / 16 May 1988
Season 2
The Child
S2E1 / 21 Nov 1988
Where Silence Has Lease
S2E2 / 28 Nov 1988
Elementary, Dear Data
S2E3 / 05 Dec 1988
The Outrageous Okona
S2E4 / 12 Dec 1988
Loud as a Whisper
S2E5 / 09 Jan 1989
The Schizoid Man
S2E6 / 23 Jan 1989
Unnatural Selection
S2E7 / 30 Jan 1989
A Matter of Honor
S2E8 / 06 Feb 1989
The Measure of a Man
S2E9 / 13 Feb 1989
The Dauphin
S2E10 / 20 Feb 1989
Contagion
S2E11 / 20 Mar 1989
The Royale
S2E12 / 27 Mar 1989
Time Squared
S2E13 / 03 Apr 1989
The Icarus Factor
S2E14 / 24 Apr 1989
Pen Pals
S2E15 / 01 May 1989
Q Who
S2E16 / 08 May 1989
Samaritan Snare
S2E17 / 15 May 1989
Up the Long Ladder
S2E18 / 22 May 1989
Manhunt
S2E19 / 19 Jun 1989
The Emissary
S2E20 / 29 Jun 1989
Peak Performance
S2E21 / 10 Jul 1989
Shades of Gray
S2E22 / 17 Jul 1989
Season 3
Evolution
S3E1 / 25 Sep 1989
The Ensigns of Command
S3E2 / 02 Oct 1989
The Survivors
S3E3 / 09 Oct 1989
Who Watches the Watchers
S3E4 / 16 Oct 1989
The Bonding
S3E5 / 23 Oct 1989
Booby Trap
S3E6 / 30 Oct 1989
The Enemy
S3E7 / 06 Nov 1989
The Price
S3E8 / 13 Nov 1989
The Vengeance Factor
S3E9 / 20 Nov 1989
The Defector
S3E10 / 01 Jan 1990
The Hunted
S3E11 / 08 Jan 1990
The High Ground
S3E12 / 29 Jan 1990
Déjà Q
S3E13 / 05 Feb 1990
A Matter of Perspective
S3E14 / 12 Feb 1990
Yesterday's Enterprise
S3E15 / 19 Feb 1990
The Offspring
S3E16 / 12 Mar 1990
Sins of the Father
S3E17 / 19 Mar 1990
Allegiance
S3E18 / 26 Mar 1990
Captain's Holiday
S3E19 / 02 Apr 1990
Tin Man
S3E20 / 23 Apr 1990
Hollow Pursuits
S3E21 / 30 Apr 1990
The Most Toys
S3E22 / 07 May 1990
Sarek
S3E23 / 14 May 1990
Ménage à Troi
S3E24 / 28 May 1990
Transfigurations
S3E25 / 04 Jun 1990
The Best of Both Worlds (1)
S3E26 / 18 Jun 1990
Season 4
The Best of Both Worlds (2)
S4E1 / 24 Sep 1990
Family
S4E2 / 01 Oct 1990
Brothers
S4E3 / 08 Oct 1990
Suddenly Human
S4E4 / 15 Oct 1990
Remember Me
S4E5 / 22 Oct 1990
Legacy
S4E6 / 29 Oct 1990
Reunion
S4E7 / 05 Nov 1990
Future Imperfect
S4E8 / 12 Nov 1990
Final Mission
S4E9 / 19 Nov 1990
The Loss
S4E10 / 31 Dec 1990
Data's Day
S4E11 / 07 Jan 1991
The Wounded
S4E12 / 28 Jan 1991
Devil's Due
S4E13 / 04 Feb 1991
Clues
S4E14 / 11 Feb 1991
First Contact
S4E15 / 18 Feb 1991
Galaxy's Child
S4E16 / 11 Mar 1991
Night Terrors
S4E17 / 18 Mar 1991
Identity Crisis
S4E18 / 25 Mar 1991
The Nth Degree
S4E19 / 01 Apr 1991
Qpid
S4E20 / 22 Apr 1991
The Drumhead
S4E21 / 29 Apr 1991
Half a Life
S4E22 / 06 May 1991
The Host
S4E23 / 13 May 1991
The Mind's Eye
S4E24 / 27 May 1991
In Theory
S4E25 / 03 Jun 1991
Redemption (1)
S4E26 / 17 Jun 1991
Season 5
Redemption (2)
S5E1 / 23 Sep 1991
Darmok
S5E2 / 30 Sep 1991
Ensign Ro
S5E3 / 07 Oct 1991
Silicon Avatar
S5E4 / 14 Oct 1991
Disaster
S5E5 / 21 Oct 1991
The Game
S5E6 / 28 Oct 1991
Unification (1)
S5E7 / 04 Nov 1991
Unification (2)
S5E8 / 11 Nov 1991
A Matter of Time
S5E9 / 18 Nov 1991
New Ground
S5E10 / 06 Jan 1992
Hero Worship
S5E11 / 27 Jan 1992
Violations
S5E12 / 03 Feb 1992
The Masterpiece Society
S5E13 / 10 Feb 1992
Conundrum
S5E14 / 17 Feb 1992
Power Play
S5E15 / 24 Feb 1992
Ethics
S5E16 / 02 Mar 1992
The Outcast
S5E17 / 16 Mar 1992
Cause and Effect
S5E18 / 23 Mar 1992
The First Duty
S5E19 / 30 Mar 1992
Cost of Living
S5E20 / 20 Apr 1992
The Perfect Mate
S5E21 / 27 Apr 1992
Imaginary Friend
S5E22 / 04 May 1992
I, Borg
S5E23 / 11 May 1992
The Next Phase
S5E24 / 18 May 1992
The Inner Light
S5E25 / 01 Jun 1992
Time's Arrow (1)
S5E26 / 15 Jun 1992
Season 6
Time's Arrow (2)
S6E1 / 21 Sep 1992
Realm of Fear
S6E2 / 28 Sep 1992
Man of the People
S6E3 / 05 Oct 1992
Relics
S6E4 / 12 Oct 1992
Schisms
S6E5 / 19 Oct 1992
True Q
S6E6 / 26 Oct 1992
Rascals
S6E7 / 02 Nov 1992
A Fistful of Datas
S6E8 / 09 Nov 1992
The Quality of Life
S6E9 / 16 Nov 1992
Chain of Command (1)
S6E10 / 14 Dec 1992
Chain of Command (2)
S6E11 / 21 Dec 1992
Ship in a Bottle
S6E12 / 25 Jan 1993
Aquiel
S6E13 / 01 Feb 1993
Face of the Enemy
S6E14 / 08 Feb 1993
Tapestry
S6E15 / 15 Feb 1993
Birthright (1)
S6E16 / 22 Feb 1993
Birthright (2)
S6E17 / 01 Mar 1993
Starship Mine
S6E18 / 29 Mar 1993
Lessons
S6E19 / 05 Apr 1993
The Chase
S6E20 / 26 Apr 1993
Frame of Mind
S6E21 / 03 May 1993
Suspicions
S6E22 / 10 May 1993
Rightful Heir
S6E23 / 17 May 1993
Second Chances
S6E24 / 24 May 1993
Timescape
S6E25 / 14 Jun 1993
Descent (1)
S6E26 / 21 Jun 1993
Season 7
Descent (2)
S7E1 / 20 Sep 1993
Liaisons
S7E2 / 27 Sep 1993
Interface
S7E3 / 04 Oct 1993
Gambit (1)
S7E4 / 11 Oct 1993
Gambit (2)
S7E5 / 18 Oct 1993
Phantasms
S7E6 / 25 Oct 1993
Dark Page
S7E7 / 01 Nov 1993
Attached
S7E8 / 08 Nov 1993
Force of Nature
S7E9 / 15 Nov 1993
Inheritance
S7E10 / 22 Nov 1993
Parallels
S7E11 / 29 Nov 1993
The Pegasus
S7E12 / 10 Jan 1994
Homeward
S7E13 / 17 Jan 1994
Sub Rosa
S7E14 / 31 Jan 1994
Lower Decks
S7E15 / 07 Feb 1994
Thine Own Self
S7E16 / 14 Feb 1994
Masks
S7E17 / 21 Feb 1994
Eye of the Beholder
S7E18 / 28 Feb 1994
Genesis
S7E19 / 21 Mar 1994
Journey's End
S7E20 / 28 Mar 1994
Firstborn
S7E21 / 25 Apr 1994
Bloodlines
S7E22 / 02 May 1994
Emergence
S7E23 / 09 May 1994
Preemptive Strike
S7E24 / 16 May 1994
All Good Things...
S7E25 / 23 May 1994
Patrick Stewart
Jean-Luc Picard
Jonathan Frakes
William T. Riker
Brent Spiner
Data
LeVar Burton
Geordi La Forge
Michael Dorn
Worf
Marina Sirtis
Deanna Troi
