Disclaimer: I don’t own Heroes or any of the characters. Tim Kring created it and as far as I know NBC owns it. Natalie Chaidez is listed as the writer of “The Fix,” which is a jumping off point for this.
Spoilers: Season 1 all the way through Season 4, including the graphic novels. Starts with an intro in 2006 but the bulk is set during 1984
Characters: Primarily: Claude Rains and Charles Deveaux. Peter Petrelli is in the brief section from “The Fix” leading to this flashback, and there is a brief moment in that flashback with the mysterious Sylvia
Pairings: Claude/Sylvia (brief and nothing graphic)
Rating: PG13 as most kids might not get this and there’s’ some mild swearing.
Summary: Missing scene and flashback explaining how Claude wound up working for the Company in the first place
It's over here in my journal