Charmed
Season 1, Episode 17: That '70s Episode
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A powerful warlock shows up claiming that he made a pact with the sisters' mother in which he spared her life in exchange for the girls' powers. Fleeing him, the three sisters go back in time to the 1970s when their mother was still alive and they try to prevent the pact.
All Episodes - Season 1
Episode 1
Something Wicca This Way Comes
Episode 2
I've Got You Under My Skin
Episode 3
Thank You for Not Morphing
Episode 4
Dead Man Dating
Episode 5
Dream Sorcerer
Episode 6
The Wedding from Hell
Episode 7
The Fourth Sister
Episode 8
The Truth Is Out There... and It Hurts
Episode 9
The Witch Is Back
Episode 10
Wicca Envy
Episode 11
Feats of Clay
Episode 12
The Wendigo
Episode 13
From Fear to Eternity
Episode 14
Secrets and Guys
Episode 15
Is There A Woogy In The House?
Episode 16
Which Prue Is It, Anyway?
Episode 17
That '70s Episode
Episode 18
When Bad Warlocks Go Good
Episode 19
Out of Sight
Episode 20
The Power of Two
Episode 21
Love Hurts
Episode 22
Déjà Vu All Over Again