Warning: Full spoilers for the episode below.
Well… this has to be one of the strangest season finales of any show in recent memory. Viewers could be forgiven for not even realizing that “Dick Grayson” is the season finale, given the complete lack of closure and the fact that this season was previously billed as being 12 episodes long. Whatever weird behind-the-scenes turmoil may have led us to this point, the end result is a disappointing and anti-climatic finish to what had been a promising first year for Titans.
The goal with this episode was clearly to pay homage to the New Teen Titans comic book storyline “The Terror of Trigon,” which also featured a chapter where the Titans were tormented by dark visions courtesy of Trigon. In general, there’s a pretty strong legacy of DC stories dealing with this notion of a hero being tempted by a vision of what their life might have been. There’s everything from “Whatever Happened to the Man of Tomorrow” and its various adaptations to the Batman: The Animated Series episode “Perchance to Dream.” The premise, in this case, is very similar. Dick Grayson is presented with a taste of the happy life he could have if he leaves the superhero game behind, only for the cracks of this dream world to begin showing themselves.
Source: IGN.com Titans Falls Apart in its Season 1 Finale