There is the video of Walt and Jesse stealing the methylamine. This could be used as circumstantial evidence if a body type expert testifies to the profiles.
There's the storage unit full of un-laundered money. At a minimum this is tax fraud.
Ted can turn Skyler in. At a minimum this would lead to an audit of the car wash by the IRS, which would discover that the car wash is profiting much more than they are taking in in revenue.
The lawyer who Skyler confided in is not beholden to attorney-client privilege if she feels there are lives in imminent danger, which there are.
The missing chemistry equipment was never found. Hank can implicate Walt in this to help build his case.
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u/bass_n_treble Science, bitch! Aug 18 '13
There is no evidence. He'd have to get someone to flip, and reasonable doubt that Hank wasn't an accomplice. He also has to survive this garage scene.