TV EPISODE · S03E10
Once Upon a Time
Catherine meets court scientist Nikolai, who announces a comet is about to pass through Russia. She uses this phenomenon to her advantage and in the face of some huge challenges, unearths a new side of her leadership.
Back to The GreatSuggest correctionSign in to trackREPRESENTED HISTORY
1763 → 1764
Episode placement confidence: high. Importance: 3/5.
- Series
- The Great
- Episode
- S03E10
- Historical relation
- Alternative History
- Accuracy
- Not rated
- Events
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- Places
- 0
STREAMING AVAILABILITY
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Availability may change · checked 03/10/2026.Sources: TMDB/JustWatch and Streaming Availability API. Some links are paid affiliate links. Disclosure. As an Amazon Associate I earn from qualifying purchases.
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