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Season guide

Who Do You Think You Are?: Season 9

8 episodes Premiered Mar 5, 2017 Updated Sep 28, 2026
Previously on Who Do You Think You Are?

Season 9 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Who Do You Think You Are? Season 8.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 9 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 9 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 9: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

38%
63%
Mytharc (3): Crucial lore & season climaxes
Core (5): Character development & subplots
Side Quest (0): Standalone / filler
S9·E1 Mytharc

Courteney Cox

Mar 5, 2017 · 42 min

Courteney Cox traces her maternal line back to ambitious and ruthless relatives who plotted and murdered their way to power in medieval times; and she's shocked to discover an ance

S9·E2 Core

Julie Bowen

Mar 12, 2017 · 42 min

Julie Bowen makes a shocking discovery that a beloved relative lead a nefarious organization that triggered a dark chapter of U.S. history; and uncovers another ancestor who risked

S9·E3 Core

Jennifer Grey

Mar 19, 2017 · 42 min

Jennifer Grey discovers much more about the grandfather she thought she knew as she uncovers how he survived adversity to become a beacon of his community; and discovers a great-gr

S9·E4 Core

Noah Wyle

Mar 26, 2017 · 42 min

Noah Wyle investigates his maternal family line, discovering an ancestor who was catapulted into one of America's biggest wars, and whose life spiraled out of control from remarkab

S9·E5 Core

Jessica Biel

Apr 2, 2017 · 42 min

Jessica Biel hunts for the truth behind family lore surrounding the death of an ancestor. She also makes two shocking discoveries that shake everything she knows about her heritage

S9·E6 Core

Smokey Robinson

Apr 9, 2017 · 42 min

Motown legend and icon, Smokey Robinson tracks down a grandfather tangled in a swirl of controversy and connects to a relative's familiar struggle with oppression while coming face

S9·E7 Mytharc

John Stamos

Apr 16, 2017 · 42 min

Actor John Stamos explores his Greek heritage for the first time and discovers an explosive feud that shattered his grandfather's childhood. He also meets a relative he never knew

S9·E8 Mytharc

Liv Tyler

Apr 24, 2017 · 42 min

Actress Liv Tyler unravels the mystery of her father Steven Tyler’s maternal family line, uncovering ancestors who took part in famous American battles. She also learns the shockin

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