Barry Season 4 Premiere: The Sins Of The Past Come Back To Haunt The Present

Barry is no longer seeking redemption and feels no remorse for his violent past.
The new season focuses on how Barry's friends and loved ones are affected by his descent into amorality.
Barry is only concerned with his own safety and comfort, not becoming a good person.
Sally represents an idealistic dream that Barry can never attain while NoHo Hank does not emotionally affect him.
Everyone in the show is haunted by nightmares, flashbacks and the damage from past events.