Muse is both a common term for a handheld Cognet linking device, and also a specific brand of said CogLink device. Functionally the Cosmic Era version of a smartphone
Last night, your buddy was thinking about calling one of those crazy psychic hotlines, he was really depressed, his girlfriend dumped him, and he wanted some good news. You know they’re all a scam, they give you some advice that could apply to everyone and a large bill to boot. You told him to go for it.
But now he’s missing. All you have is his cell phone, and something is wrong with it. You found it in your toilet today. Yeah, your toilet. It’s got all his old numbers and a few you don’t recognize. You tried to call some, but all you got was a what sounded like a bunch of voices muttering at once. What the hell is going on here?
It looks like a cook's book. It is a cook's book. It is also where the cook, who happened to be a master spy, encoded all his secrets and contacts. The book has innocently fallen into your group's hands. Everyone wants it, and many are not subtle or peaceful in their attempts.