The CSIs uncover the lair of the compass killer and race to discover the identity of the fourth and final victim before sunrise.
The CSIs wonder who murdered a man with an exploding cigar. Danny is devastated when his young neighbour is killed during a robbery at a store.
The brutal murder of a jewellery-auction appraiser points the CSIs towards events that took place during the Holocaust (22/25).
A man falls from a bridge in what appears to be a case of suicide. But the CSIs soon realise the man is the third victim of the 'compass killer'.