The CSIs are called into action when a fish merchant is found dead. Danny and Hawkes discover the man was impaled on a swordfish.
A man is found dead but the random pieces of evidence at the crime scene don't seem to make sense. The case takes a twist when the CSIs learn the victim was a stalker.
A Native American chief is shot on a train, but the team soon realises that the cause of death is more complicated than first appears (19/25).
At a French Revolution-themed fundraiser at the UN, Mac, Stella and Hawkes hurdle diplomatic road blocks when they investigate two murders.