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Watson S2E19 — Rule of Three
7.5
Watson•Season 2•Episode 19

Rule of Three

7.5/10 · 147 votesApr 26, 202643 min

Ranked #12 of 20 in Season 2•matches the season avg

Discussion

As Adam's wife goes in for a C-section to deliver triplets, chaos ensues when their OB-GYN passes out in the operating room. Meanwhile, a severe storm detours Watson and Mary's trip to find a renowned doctor to remove Watson's brain tumor.

Directed byJennifer Lynch
Written byTeresa Tuan
Previous episodeE18 · Sic Semper TyrannisNext episodeE20 · The Cobalt Fissure
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Cast6

Morris Chestnut

Morris Chestnut

Dr. John Watson

Eve Harlow

Eve Harlow

Dr. Ingrid Derian

Peter Mark Kendall

Peter Mark Kendall

Dr. Stephens Croft / Dr. Adam Croft

Inga Schlingmann

Inga Schlingmann

Dr. Sasha Lubbock

Ritchie Coster

Ritchie Coster

Shinwell Johnson

Rochelle Aytes

Rochelle Aytes

Dr. Mary Morstan

Crew2

T

Teresa Tuan

Writer

Jennifer Lynch

Jennifer Lynch

Director

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Episode Summary

"Rule of Three" is episode 19 of Watson season 2. It scored 7.5/10 from 147 votes, ranking #12 of 20 episodes this season (season average 7.5). Directed by Jennifer Lynch and written by Teresa Tuan, it aired on April 26, 2026.

Next: E20 · The Cobalt FissureBest of Season 2