‘Watson’ Season 2 Episode 4 Preview: “Happy When It Rains”

The team is faced with an outbreak of flesh-eating bacteria on CBS’s Watson season two, episode four. “Happy When It Rains” will air on Monday, November 3, 2025 at 10pm ET/PT. 

Morris Chestnut leads the cast as Dr. John Watson, Eve Harlow stars as Dr. Ingrid Derian, and Peter Mark Kendall returns as Dr. Stephens Croft and Dr. Adam Croft. Ritchie Coster plays Shinwell Johnson, Inga Schlingmann is Dr. Sasha Lubbock, and Rochelle Aytes is Dr. Mary Morstan.

“Happy When It Rains” Plot: 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.

Watson Season 2 Episode 4
Inga Schlingmann as Dr. Sasha Lubbock, Morris Chestnut as Dr. John Watson, and Eve Harlow as Dr. Ingrid Derian in ‘Watson’ season 2 episode 4 (Photo: Colin Bentley © 2025 CBS Broadcasting, Inc)

Watson Season 2 Description:

Watson is a medical show with a strong investigative spine, starring Morris Chestnut as Dr. John Watson, in a modern version of one of history’s greatest detectives as he turns his attention from solving crimes to solving medical mysteries. While Watson’s team of “doc-tectives” may have defeated Moriarty last season, they remain determined in season two in their mission to investigate and treat the world’s most rare diseases for their clinic’s patients.
 

With his eyes fixed on the future, Watson faces an unexpected twist when Sherlock Holmes, who was presumed dead, resurfaces, forcing him to confront a buried secret from his past – one that lies hidden within his own body.

Morris Chestnut and Rochelle Aytes
Morris Chestnut as Dr. John Watson and Rochelle Aytes as Dr. Mary Morstan in season 2 episode 4 (Photo: Colin Bentley © 2025 CBS Broadcasting, Inc)
Morris Chestnut as Dr. John Watson and Ritchie Coster as Shinwell Johnson in season 2 episode 4 (Photo: Colin Bentley © 2025 CBS Broadcasting, Inc.)
Peter Mark Kendall and Morris Chestnut
Peter Mark Kendall as Dr. Stephens Croft and Morris Chestnut as Dr. John Watson in season 2 episode 4 (Photo: Colin Bentley © 2025 CBS Broadcasting, Inc)
Ritchie Coster as Shinwell Johnson and Morris Chestnut as Dr. John Watson in season 2 episode 4 (Photo: Colin Bentley © 2025 CBS Broadcasting, Inc.)