Warning: Some of the images in the above slide show are graphic and not suitable for all viewers.
When historic crime scene photos are superimposed (placed) over the locations as they look today, the results are quite enthralling.
Historian and photographer Marc Hermann has used his incredible talent to give us a glimpse into the once crime-ridden New York City.
The vintage black and white photos come from the New York Daily News archive and highlight some shocking moments in history.
Check them out above.