TV EPISODE · S04E16
All It Cost Her
In the series finale, Mary changes the course of history with a decision she makes, and her perilous move for survival causes her to have a stunning realization. Meanwhile, Elizabeth steadies herself for war and becomes the instigator in Mary's demise.
Back to ReignSuggest correctionSign in to trackREPRESENTED HISTORY
1561 → 1587
Episode placement confidence: high. Importance: 3/5.
- Series
- Reign
- Episode
- S04E16
- Historical relation
- Period Setting
- Accuracy
- 1/5
- Events
- 0
- Places
- 0
STREAMING AVAILABILITY
Where to watch
Availability shown for the parent series.
Free
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.
External references1
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