: Barry travels to Lian Yu to confirm his suspicions with the imprisoned Thawne. The prisoner reveals that this "new" Thawne is likely a version nearly erased by the Armageddon event, similar to the remnants created during Flashpoint. Episode Highlights

: John Diggle travels to Lian Yu to consult with the "other" Thawne (the prisoner version) regarding his own destiny and the mysterious green box he has been carrying.

: Barry helps Meena Dhawan (Fast Track) test her new artificial speed powers. He is shocked to discover that her Chief of Engineering is Thawne, who claims to have no knowledge of their murderous history.

: The episode concludes with Deon (the Still Force) appearing to help the prisoner Reverse-Flash, while Chillblaine works on a way to bring back Frost.

Watch these key moments and character breakdowns from 'The Man in the Yellow Tie':

: Fans of the earlier seasons were treated to the return of the original Eobard Thawne actor, Matt Letscher. Unlike the version played by Tom Cavanagh, this Thawne appears to be a "good" version from a different point in the timeline or an entirely new reality.

: The episode explores the creation of artificial speed through a biometric lightning oscillation chamber, which Meena calls "the Block."