WatsonThe Cobalt Fissure

TV-14

S2 • E20 May 3, 2026 44m

7.64.0

Watch on Apple TV

On Apple TV

Buy $2.99Ad

Add Show to Watchlist

Mark as Watched

A seemingly random murder outside of UHOP sets the stage for the arrival of someone from Watson and Sherlock Holmes' past.

Directed by Larry Teng

Where to Watch Watson - S2 • E20

Cast of The Cobalt Fissure

Morris ChestnutDr. John Watson
Eve HarlowDr. Ingrid Derian
Peter Mark KendallDr. Stephens Croft / Dr. Adam Croft
Inga SchlingmannDr. Sasha Lubbock
Ritchie CosterShinwell Johnson
Rochelle AytesDr. Mary Morstan
Hampton FlukerDr. Isaac Niles
Karen RobinsonBrenda the Battle Axe
Rachel HaywardDetective Lestrade
John CassiniDr. Ivan Ferry
Robert CarlyleSherlock Holmes
Riley OrrGlen/Croft Twin
Марго БингхэмNurse Carlin DaCosta
Suzy Eddie IzzardSebastian Moran
Elizabeth BlancoLuna Quinn
Bex l GrantNurse Laura Chambers
Larry TengDirector
Sharon MoalemWriter
Rebecca HofherrWriter

Get Plex on Your Devices

Free on 20+ platforms. Pick yours.

App StoreiOS & Apple TV

Google PlayAndroid

TVFire TV, Roku & more

See all supported devices →