[s2e12] — Fast Lane

: Despite the betrayal, Barry convinces the team that they should help Harry save his daughter. The episode ends with the team preparing to travel to Earth-2. Development and Themes

: The "villain of the week" is Joey Monteleone, a meta-human who can transform into liquid asphalt (Tar Pit). He targets the men who attempted to kill him during the particle accelerator explosion. [S2E12] Fast Lane

Watch this recap to see how the betrayal unfolded and how the team prepares for their journey to Earth-2: : Despite the betrayal, Barry convinces the team

: Harry Wells strikes a deal with Zoom to steal Barry’s speed in exchange for Jesse's life. He manages to siphon about 2% of Barry’s speed using a hidden device, which later causes Barry to be just slow enough to fail in protecting Iris. He targets the men who attempted to kill

: Riddled with guilt after Iris is hurt, Harry confesses his betrayal to the team. Joe West’s immediate reaction is to punch Harry and lock him in the Pipeline.

: Iris becomes concerned about Wally West’s illegal drag racing hobby. Her attempt to intervene at a race goes wrong when Tar Pit attacks, leading to Iris being injured by a piece of glass.