Aired 12 years ago - Jan 18, 2012
A series of murders in San Francisco bearing the tell-tale signs of the infamous Zodiac Killer have the BAU wondering if the notorious serial killer has returned. Also, Reid ponders if he should be doing more with his genius abilities.
Mouse over thumbnail for slideshow
Or scroll and see one by one:
#5
#6
#8
#9
#13
#15
#17
#21
#24
#25
#26
#27
#28
#31
#33
#36
#44
#45
