No fan of Lee but he's done great work on Browder and also things like the Ukraine meddling. Mueller has also not attempted to interview John Mark Dougan or Assange. It's all bullshit.
Here's a great documentary on Dougan that was recently released. It doesn't dig into the leak by Seth Rich and the setting up of DC Leaks, but it does tell the story of who he is and how he ended up in Russia. Really well done by RT.