It's amazing how often players will forget all of the background information about your carefully constructed campaign that is actually relevant and important, yet they'll remember tiny details about insignificant events or NPCs from playing sessions that took place years ago. Incorrect details that lead them off on wild tangents and conspiracy theories completely unrelated to the current adventure plot.
This is why games that are actually about conspiracies are so much fun to run. You don't really have to do anything. The players will find conspiracies behind everything that happens and every person they meet, whether they really exist or not.
Unfortunately this also happens to be the case when running games that don't have conspiracies around every corner.
Transcript
Anakin: We need to find out who wants you dead.
Padmé: Isn't it obvious? Governor Bubble! That goateed traitor is clearly behind all this.
Anakin: That, um... may be a possibility.
{beat}
Padmé: You really think so?
Anakin: You have more experience in matters of state than a mere Padawan, M'Lady.
Padmé: Uh... good. We'll go to Naboo and capture him. Hey, can you cast Detect Magic on these clothes?
Anakin: Why?
Padmé: I can't sell them until I know which ones are useful.
Anakin: Obi-Wan hasn't taught me that ability yet...
Padmé: Hmm. I'd better pack all of them.
Anakin: We may pick up a lead on the Peace Moon plans too, since it's being built for Naboo.
Padmé: See? Everything falls into place when I'm in charge.
Anakin: Yes, M'Lady.
Padmé: {at wardrobe} Which of these do you think has the best Armour Class bonus?