I've been wondering this for months, when the premiere was revealed to be called El Topo. Was something cut at the last minute, or is there something in the premiere that does actually hint to there being a mole? Maybe that's what they were originally going to use as justification for Gus giving Victor a wet shave?

I'm calling it now that Skyler is going to launder money through Ted's failing business. She might even get a little somethin' somethin' out of it.

I wasn't sure, but I rewatched the final scene and he's right. Hank whips out three pictures - the first is of the cup Gus refilled for Hank, the second is the fingerprint match, and the final one is a shot of Gale's telescope with a number of fingerprints on it.