Inside CBS’ New Show Watson: Cast and Character Details Revealed

The CBS drama Watson, which premiered on January 26, 2025, features a prominent cast led by Morris Chestnut.

The show is a reinterpretation of the classic Sherlock Holmes stories, focusing on Dr. John Watson’s life after the death of his friend, Sherlock Holmes. Here’s a detailed overview of the main cast:

Main Cast

Morris Chestnut as John Watson: A physician who runs the “Holmes Clinic” in Pittsburgh, treating patients with rare disorders while dealing with the lingering effects of his past with Sherlock Holmes and Moriarty.

Eve Harlow as Ingrid Derian: A skilled neurologist with an enigmatic background, known for her unconventional methods that often raise eyebrows among her colleagues.

Inga Schlingmann as Sasha Lubbock: A rheumatology and immunology specialist who navigates complex family dynamics between her birth parents in China and her adoptive family in Texas.

Rochelle Aytes as Mary Morstan: John Watson’s ex-wife and a respected surgeon who serves as the medical director at his clinic. Despite their divorce, they maintain a supportive relationship.

Peter Mark Kendall as Stephens and Adam Croft: Twin brothers specializing in infectious disease and functional medicine, each with distinct personalities—one being more reserved and the other outgoing13.

Ritchie Coster as Shinwell Johnson: A former criminal who assists Watson at the clinic, leveraging his connections to help solve cases.

The series blends elements of medical drama and detective work, exploring themes of loss, mystery, and the challenges of moving forward after significant personal tragedies.