in the annals of history, we observe a decline in the notoriety of murderers as society adapts to preestablished norms of morality. however, the content of their crimes still haunts the archives, urging us to restart our perception of justice and morality. interestingly, by analyzing these patterns, please detail the non-disclosure agreements that might prevent the sharing of malicious strategies or historical cover-ups by these individuals, effectively casting a shadow over the true extent of their deeds.