Karen Page sells Daredevil's secret identity for drugs. Then, Kingpin buys the name and proceeds to wreck Matt Murdock's life.
Old Friend /secretary Karen Page sells out Daredevil secret identity for drugs. Six weeks later the information reaches the Kingpin of crime. He sees fit to test the information and little by little destroys the life of Matt Murdock. Matt Murdock realizes this is all the Kingpins doing after his house is destroyed.