There's no 'mystery' (to/as to/about) why we're here. = It's no 'mystery' why we're here. [=we know why we are here]
His success is something of a 'mystery'. = His success is a bit of a 'mystery'.
We'll reveal the identity of today's 'mystery' guest after these commercials.
(..) you need to be dependably good. You can't just screw everything up, and then take a boat out into the ocean to save your best friend, or solve a mystery, and fly to Kansas. You need to do it every day, which is so... hard. When you're a kid, you convince yourself that maybe the grand gesture (..)2018 TvShow: BoJack Horseman Title: Free Churro Season: 5 Episode 6