Where can I watch “The Big Bang Theory” Season 12 Episode 21 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

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Watching earlier episodes in season 12 helps you follow the plot and character arcs leading into this episode.

Watch The Big Bang Theory Season 12 Episode 21 Online

“Les Preuves du plagiat” — Watch "The Big Bang Theory" Season 12 Episode 21 online in HD for free. Check streaming providers, cast, and episode details.

May 2, 2019 Season 12 Episode 21 20 min PG

6.9 ★ ★ ★ ★ ★

35 votes

The Big Bang Theory Season 12

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Season 12 Episode 21 — Aired on May 2, 2019 • runs about 20 minutes.

Directed by Nikki Lorre.

Written by Steve Holland, Tara Hernandez.

Notable cast/guest names in this episode include Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg.

This page includes 3 official still(s) (when available) plus legal availability links.

Looking for “watch The Big Bang Theory Season 12 Episode 21 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Sheldon et Amy essaient d'améliorer leur relation avec les Drs Pemberton et Campbell pour rester dans la compétition pour le prix Nobel. Cependant, Barry Kripke sait que Pemberton a plagié sa thèse de doctorat et peut le prouver. Sheldon, Amy et leurs amis se demandent alors si utiliser cette information pour que les Cooper aient seuls le mérite de leur découverte en vaut la peine.