The public should be 'clued in' to what's happening. [=should be told about what's happening]
He doesn't have a 'clue' when it comes to fixing cars. [=he knows nothing about fixing cars]
He's totally 'clued in on' [=he knows a lot about] the latest computer developments.
(..) But this is clever talk. We won't find him by dissecting our own minds. Nor shall we find him by looking for men with silver smiles. Chasing clues will mean he's always a step ahead of us. We must see what's behind the clues. If you're so convinced of your theories, (..)2018 TvShow: The Alienist Title: These Bloody Thoughts Season: 1 Episode 4