Published in 2004, Sins Past is a controversial story arc from The Amazing Spider-Man series, written by J. Michael Straczynski with art by Mike Deodato. The arc spans issues #509-514.
The story reveals that Gwen Stacy had children, Gabriel and Sarah, from an affair with Norman Osborn. This revelation deeply impacts Peter Parker as he grapples with the implications. Gabriel and Sarah initially believe Spider-Man is responsible for their mother's death and seek vengeance.
The storyline was divisive among fans due to its retcon of Gwen Stacy's character. Despite the controversy, it remains part of Spider-Man's canon and influenced subsequent storylines.