Elementary Exclusive: Newsroom Actor Nabs Guest Spot as Sherlock's Ally

Elementary David HarbourSherlock Holmes has found an accomplice of sorts in The Newsroom‘s David Harbour.

TVLine has learned exclusively that the actor has booked a guest spot in an episode of CBS’ new fall drama Elementary.

He’ll play Dr. Mason Baldwin, a brilliant surgeon who becomes an unlikely ally to Jonny Lee Miller‘s Sherlock as the eccentric detective investigates a murder in a hospital.

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Elementary — which bows Thursday, Sept. 27 at 10/9c — is a modern-day take on the iconic sleuth, who in this version is a recovering addict solving crimes alongside his sober companion Joan Watson (Lucy Liu). Aidan Quinn (Prime Suspect) co-stars as Holmes’ NYPD liaison, while Jon Michael Hill (Detroit 1-8-7) plays a police detective.