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Jekyll's serum
Jekyll's serum
First seen
Last seen
Seen in
Mentioned in
Created by
Destroyed by
Possessed by
Dr. Jekyll (formerly)
Poole (formerly)
Snow White
Used for
Transforms one into their darker self
Separates one from their darker self
S1 - S2 - S3 - OW - S4 - S5 - S6 - S7

Jekyll's serum.


Before the Curse

After the Third Curse

Season 5

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