(CNN) On Friday, President Donald Trump (and the rest of us) got the most fulsome look into the inner workings of special counsel Robert Mueller's investigation yet. And what Trump saw has to terrify him.

What was on display -- in sentencing documents for former Trump lawyer Michael Cohen and a memo detailing how one-time Trump campaign chairman Paul Manafort broke the terms of his plea agreement -- was the depth and breadth of what Mueller and his team are investigating, what they already know and just how close they are to the President himself.

Consider what we learned from the filings from Mueller and the Southern District of New York on Friday:

1. Trump directed Cohen to pay off both porn actress Stormy Daniels and former Playboy Playmate Karen McDougal, both of whom have alleged they had affairs with the President in the mid 2000s, during the 2016 campaign. Cohen had already pleaded guilty to purposely circumventing campaign finance law to make the payments -- and said he did so at the direction of and coordinated with Trump. Trump has denied that he knew where the money was coming from and that he had anything to do with the decision to pay off the women.

2. In November 2015, a Russian national spoke with Cohen and attempted to offer "political synergy" with the Trump campaign (Mueller's office said Cohen didn't pursue the outreach).

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