A man's fatal fall from a hotel balcony launches the CSIs into an investigation to determine if his death was suicide or the result of foul play.
While Agent Hotchner takes a leave of absence to contemplate his future with the BAU, the team is called to investigate a home invasion case in Nashville without him.
In one of its most difficult cases, the BAU is called to Detroit to help track down a serial killer who forces the team into Canada to catch him.
As a DEA manhunt for Tuco gets under way, Skyler enlists Hank in the search for Walt.
As Hank comes dangerously close to uncovering his role in the drug trade, Walt devises a plan to cover his tracks.
Walt and Jesse find themselves trapped with an unhinged Tuco. Marie and Hank comfort Skyler, as all three are distraught over Walt's disappearance. Hank pays a visit to Mrs. Pinkman on some not-so-official business.
With Walt and Jesse trapped with Tuco, Marie and Hank comfort Skyler over his disappearance.
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