Episode 2×20 “The Cobalt Fissure”

THE SCENE IS SET FOR THE ARRIVAL OF SOMEONE FROM WATSON AND SHERLOCK’S PAST

SERIES FIANLE

“The Cobalt Fissure” — Coverage of the CBS Original Series WATSON, scheduled to air on the CBS Television Network. Pictured: Morris Chestnut as Dr. John Watson. Photo: Colin Bentley/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.

SYNOPSIS: A seemingly random murder outside of UHOP sets the stage for the arrival of someone from Watson and Sherlock Holmes’ past, on the series finale of Watson.

WRITTEN BY: Rebecca Hofherr and Sharon Moalem

DIRECTED BY: Larry Teng

AIR DATE: Sunday, May 3 (9:59-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

Episode 2×19 “Rule of Three”

A SEVERE STORM DETOURS WATSON AND MARY’S TRIP

SYNOPSIS: 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.

WRITTEN BY: Teresa Tuan

DIRECTED BY: Jennifer Lynch

AIR DATE: Sunday, April 26 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

Episode 2×18 “Sic Semper Tyrannis”

MARY IS LEFT IN CHARGE OF THE HOLMES CLINIC

SYNOPSIS: Following his brain tumor diagnosis, Watson goes on medical leave to seek treatment, leaving Mary in charge of The Holmes Clinic as a notorious South American dictator demands Watson see to his mysterious autoimmune condition personally.

Meanwhile, Ingrid grows more concerned about Beck’s obsession with Sasha.

WRITTEN BY: Michael Narducci

DIRECTED BY: Clara Aranovich

AIR DATE: Sunday, April 19 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

Episode 2×17 “Unsolved Mysteries”

A KEY PLAYER DISAPPEARS

SYNOPSIS: After a key player disappears, the team rushes to find them before it’s too late.

WRITTEN BY: Adam Pasen & Sammy Horowitz

DIRECTED BY: Loren Yaconelli

AIR DATE: Sunday, April 12 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Unsolved Mysteries”

Episode 2×16 “Respect the Process. Respect the Quirks”

WATSON INVESTIGATES A CASE THAT SERVES AS A MIRROR TO HIS OWN HALLUCINATIONS

SYNOPSIS: Watson investigates a case involving a mentally unstable mother, with the woman’s delusions serving as a mirror to his own newly discovered hallucinations.

WRITTEN BY: Anna Mackey & Sharde Miller

DIRECTED BY: Loren Yaconelli

AIR DATE: Sunday, April 5 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Respect the Process. Respect the Quirks”

Episode 2×15 “A Third Act Surprise”

WATSON AND THE FELLOWS RACE TO HELP A YOUNG PATIENT WITH KIDNEY FAILURE

SYNOPSIS: Watson and the fellows race to save the life of a young woman who needs a lifesaving kidney donation.

Meanwhile, Sherlock returns to help crack unsolved cases in Pittsburgh.

WRITTEN BY: Charly Evon Simpson

DIRECTED BY: Valerie Weiss

AIR DATE: Sunday, March 29 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “A Third Act Surprise”

Episode 2×14 “Wrongful Life”

WATSON IS SUED BY A LONG-TERM PATIENT 

Watson is sued for Wrongful Life by a long-term patient suffering from VACTERL association, after undergoing multiple painful surgeries.

WRITTEN BY: Elizabeth JB Klaviter & Charly Evon Simpson

DIRECTED BY: Jeffrey W. Byrd

AIR DATE: Sunday, March 22 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Wrongful Life”

Episode 2×13 “For a Limited Time Only”

WATSON FIGHT TO REVIVE A WOMAN WITH A RARE CONDITION

SYNOPSIS: Watson and the fellows fight to revive a 30-year-old woman, Audrey, after her heart inexplicably stops repeatedly until they discover she has a rare phenomenon called Lazarus syndrome.

As these revivals continue, she uses the short window of time available to right her greatest wrong.

WRITTEN BY: Bashir Gavriel

DIRECTED BY: Larry Teng

AIR DATE: Sunday, March 15 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “For a Limited Time Only”

Episode 2×12 “A Family Meal”

WATSON AND THE FELLOWS DISCOVER A GRUESOME FAMILY SECRET

SYNOPSIS: When a patient arrives at the Holmes Clinic plagued by a mysterious neurological disorder, Watson and the fellows discover they were forced to eat their parents amid a childhood survival incident.

Meanwhile, Adam is struggling with how his future will change as a father.

WRITTEN BY: Jeffrey Paul King & Anna Mackey

DIRECTED BY: Ruben Garcia

AIR DATE: Sunday, March 8 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ 

PHOTOS: “A Family Meal”

Episode 2×11 “The Tunnel Under the Elms”

WATSON AND THE FELLOWS RACE TO SAVE A MAN AND HIS PREGNANT WIFE FROM A SINKHOLE

SYNOPSIS: Watson and the fellows race against the clock to save a man and his pregnant wife from a terrifying sinkhole.

Meanwhile, Ingrid’s future with her therapy group becomes unclear.

AIR DATE: Sunday, March 1 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

Note: WATSON is now airing in its new timeslot of Sundays at 10:00 PM, ET/PT.

PHOTOS: “The Tunnel Under the Elms”

Episode 2×10 “Never Been CRISPR’d”

A GENE-EDITING EXPERIMENT GONE WRONG

SYNOPSIS: Watson’s biohacker friend Hobie (aka the man with the glowing chest) returns when he rushes his new girlfriend to the Holmes Clinic after they partake in a gene-editing experiment that goes wrong.

Meanwhile, Watson becomes suspicious of Sherlock.

WRITTEN BY: Adam Samuel Goldman & Heather Ross

DIRECTED BY: Anton Cropper

AIR DATE: Monday, Dec. 15 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ 

PHOTOS: “Never Been CRISPR’d”

Episode 2×09 “Shannon Says Bex Loves Micah”

WATSON AND THE FELLOWS HELP LAILA’S SON

SYNOPSIS: Watson and the fellows help Laila’s son Micah – who was injured in a car accident while pursuing his crush, Bex, with the help of his AI chatbot.

WRITTEN BY: Sharde Miller & Jason Inman

DIRECTED BY: Jennifer Lynch

AIR DATE: Monday, Dec. 8 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Shannon Says Bex Loves Micah”

Episode 2×08 “Livvy Sees the Doctor”

WATSON AND THE FELLOWS ARE TAKEN HOSTAGE BY A MAN WITH A BOMB

SYNOPSIS: UHOP veers into terror when Watson and the fellows are taken hostage by a man with a bomb strapped to his chest who is desperate to find a cure for his 9-year-old daughter’s illness.

Noah Mills returns as Beck Wythe.

WRITTEN BY: Michael Narducci & Charly Evon Simpson

DIRECTED BY: Larry Teng

AIR DATE: Monday, Dec. 1 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ 

PHOTOS: “Livvy Sees the Doctor”

Episode 2×07 “Giant Steps”

WATSON’S FATHER VISITS UHOP

SYNOPSIS: Watson’s father, Hamish (Clarke Peters), visits UHOP to introduce Watson and the fellows to his protégé, Annabelle, a saxophone prodigy with musically induced blackouts.

As Annabelle’s condition worsens, Watson must confront his long-standing tensions with his father in order to save her.

WRITTEN BY: Teresa Tuan

DIRECTED BY: Amanda Row

AIR DATE: Monday, Nov. 24 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Giant Steps”

Episode 2×06 “Buying Time”

WATSON AND THE FELLOWS RACE TO SAVE THE LIFE OF A YOUNG ATHLETE 

Watson and the fellows race against time to save the life of Xavier, a 21-year-old athlete with a fast-growing, seemingly incurable cancer.

Meanwhile, Mycroft Holmes lets Watson know his team’s work at UHOP may no longer have funding available.

WRITTEN BY: Anna Mackey

DIRECTED BY: Clara Aranovich

AIR DATE: Monday, Nov. 17 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Buying Time”

Episode 2×05 “Lucky”

WATSON INVESTIGATES A POTENTILA CASE OF ‘LOCKED IN’ SYNDROME

SYNOPSIS: While visiting another hospital, Watson becomes convinced that a coma patient is suffering from locked-in syndrome and has been mistaken for a coma patient for over a decade. After the patient is transferred to UHOP for treatment, he shocks the team with chilling messages.

Meanwhile, Sherlock is back in town and is staying with Watson.

WRITTEN BY: Craig Sweeny & Teresa Tuan

DIRECTED BY: Guy Ferland

AIR DATE: Monday, Nov. 10 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Lucky”

Episode 2×04 “Happy When it Rains”

FLESH-EATING BACTERIUM!

SYNOPSIS: Watson and the team jump into action when four new patients are brought to UHOP with wounds that appear to be infected with a flesh-eating bacterium following a tornado.

Meanwhile, Shinwell searches for meaning as a nursing student and Adam’s wedding to Lauren risks being halted.

WRITTEN BY: Charly Evon Simpson

DIRECTED BY: Sheelin Choksey

AIR DATE: Monday, Nov. 3 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Happy When it Rains”

Episode 2×03 “Expletive Deleted”

WATSON HELPS A PATIENT WHO IS 30 YEARS OLD BUT LOOKS 10

SYNOPSIS: Watson and the team work alongside Laila to help a patient named Maxine, a 30-year-old who looks 10 years old.

WRITTEN BY: Elizabeth Klaviter

DIRECTED BY: Larry Tang

AIR DATE: Monday, Oct. 27 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Expletive Deleted”

Episode 2×02 “Back From the Dead”

A RESEARCH TEAM FALLS ILL FROM A POSSIBLE ZOMBIE VIRUS

SYNOPSIS: When a microbiology university researcher returns from an expedition to Siberia, she and her team members fall ill from a possible revived pathogen or “zombie virus.”

Meanwhile, Watson catches up with his friend Sherlock Holmes after finding out he is alive, and Ingrid unexpectedly finds herself on the team’s floor.

WRITTEN BY: Michael Narducci

DIRECTED BY: Tara Nicole Weyr

AIR DATE: Monday, Oct. 20 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+

PHOTOS: “Back From the Dead”

Episode 2×01 “A Son in the Oven”

SYNOPSIS: Watson and the fellows spring back into action when Mary’s mother accidentally poisons herself while suffering from a rare form of dementia that is progressing with impossible speed.

Meanwhile, Sherlock Holmes resurfaces after being presumed dead.

STORY BY: Sharon Moalem

TELEPLAY BY: Craig Sweeny

DIRECTED BY: Larry Teng

AIR DATE: Monday, Oct. 13 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ (live and on-demand for Paramount+ Premium plan subscribers, or on-demand for Paramount+ Essential subscribers the day after the episode airs).

PHOTOS: “A Son in the Oven”

MORE: WATSON SEASON 1 EPISODE GUIDE