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Young Sherlock Season 1

Season 4

Set in 1956, the story follows Geordie as he rails against the erosion of decency, a mood amplified by Elvis Presley’s presence; meanwhile, mold in the vestry prompts Mrs. Chapman to grumble about baking soda versus vinegar. Sidney yearns for action, not idle grumbling, and the arrival of an African American reverend to discuss religion's role in the civil rights movement sparks in Sidney a fresh inspiration—and perhaps something more.

20196 EpisodesCrime, Drama, Mystery

Cast & Crew

Robson Green

Robson Green

Geordie Keating

Al Weaver

Al Weaver

Leonard Finch

Tessa Peake-Jones

Tessa Peake-Jones

Mrs. Maguire / Mrs. Chapman

Kacey Ainsworth

Kacey Ainsworth

Cathy Keating

Skye Lucia Degruttola

Skye Lucia Degruttola

Esme Keating

James Norton

James Norton

Sidney Chambers

Tom Brittney

Tom Brittney

Will Davenport

Nick Brimble

Nick Brimble

Jack Chapman

Bradley Hall

Bradley Hall

Larry Peters

Episode Guide

Sidney and Geordie probe the stabbing of a man that takes place during a talk by a Civil Rights activist, an incident that sparks racial tensions.

Season 4 FAQs

The cast of Season 4 includes Robson Green as Geordie Keating, Al Weaver as Leonard Finch, Tessa Peake-Jones as Mrs. Maguire / Mrs. Chapman, Kacey Ainsworth as Cathy Keating, Skye Lucia Degruttola as Esme Keating, James Norton as Sidney Chambers, Tom Brittney as Will Davenport, Nick Brimble as Jack Chapman, and Bradley Hall as Larry Peters.