"Anyone who puts on a costume paints a bulls-eye on his family's chest." -Ralph Dibny aka The Elongated Man
Identity Crisis is a seven-part major DC storyline that covers the personal lives of capes and generally bringing the Silver Age into a new light. Identity Crisis starts off with the death of Ralph Dibny's wife by a mysterious assailant and from that we discover some actions done by heroes which go beyond their moral lines in order for them to protect their identities and families.
A good read for those who want to start with regular DC continuity as this story also ties-off with 52 and has lasting effects on DC continuity as a whole.