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

The stakes rise in WATSON Season 2 Episode 4, titled “Happy When It Rains,” as Dr. John Watson and his team at UHOP face one of their most chilling medical mysteries yet.

After a devastating tornado, four new patients are rushed to the hospital with wounds infected by a fast-spreading, flesh-eating bacterium.

As the infection threatens to spiral out of control, Watson and his team must act fast to uncover the source — and the cure — before it’s too late.

Meanwhile, Shinwell (Ritchie Coster) searches for purpose as he begins his journey as a nursing student, and Adam’s (Peter Mark Kendall) wedding to Lauren hits unexpected turbulence that could halt their big day.

Written by Charly Evon Simpson and directed by Sheelin Choksey, this episode blends medical intensity, emotional storytelling, and investigative suspense in classic Watson fashion.

About the Series

A thrilling modern reimagining of one of literature’s most legendary detectives, WATSON stars Morris Chestnut as Dr. John Watson, who has turned his genius from solving crimes to solving complex medical mysteries. The CBS Original drama combines the intrigue of a detective series with the high-stakes pressure of a medical thriller.

In Season 2, Watson and his team of “doc-tectives” continue their mission to treat rare diseases and uncover the secrets behind each mysterious case. But just as Watson begins to look forward, a shocking twist emerges — Sherlock Holmes, long presumed dead, resurfaces, forcing Watson to face a dark secret hidden within his own body.

The acclaimed medical drama is produced by CBS Studios and airs Mondays (10:00–11:00 PM, ET/PT) on the CBS Television Network, with episodes streaming live and on-demand on Paramount+ (Premium plan subscribers can watch live, while Essential plan subscribers can stream the next day).

Watson Cast

Morris Chestnut as Dr. John Watson
Eve Harlow as Dr. Ingrid Derian
Peter Mark Kendall as Dr. Adam Croft
Ritchie Coster as Shinwell Johnson
Inga Schlingmann as Dr. Sasha Lubbock
Rochelle Aytes as Dr. Mary Morstan

Call to Action

Check out the photos from Watson Season 2 Episode 4 “Happy When It Rains” for a first look at the gripping medical cases, emotional character moments, and the high-stakes tension that define this week’s all-new episode of Watson on CBS and Paramount+.