This is another one that got retconned, but back in the day, it really seemed like Matt Murdock kicked a sex worker out of a window and accidentally killed her during an early vigilante outing. Obviously this is in Frank Miller territory dead women, especially in the sex trade, always smacks of Miller in origin story Man Without Fear. The 1993 mini-series, written by Miller and drawn by John Romita Jr and Al Williamson, retells Daredevil's origins in greater detail, and greater grimness. If you're thinking that sounds almost exactly like Batman: Year One, then you've probably figured out what Frank Miller's one-sentence pitch was. One incident in the story involves a pre-Daredevil Matt Murdock, concealing his face with a ski mask, breaking into a brothel and beating up the pimp. The women, concerned they won't get paid, pile on Murdock and in the fray he kicks one out a window. Her death haunts him throughout the series...until it gets retconned as Typhoid Mary's origin story.
Tom Baker is the Comics Editor at WhatCulture! He's heard all the Doctor Who jokes, but not many about Randall and Hopkirk. He also blogs at http://communibearsilostate.wordpress.com/