A 65-year-old mysterious mass-murder case in Japan that may be related to Unit 731’s biological weapons, but now we may never know the truth:

http://dissenter.firedoglake.com/2013/10/20/man-who-sought-truth-in-mass-murder-teigin-case-dies-in-tokyo/?fb_action_ids=10151751847208562&fb_action_types=og.likes&fb_source=other_multiline&action_object_map=[555889681143014]&action_type_map=[%22og.likes%22]&action_ref_map=[]