Kristin Davis, the woman famously known as the "Manhattan Madam," met with special counsel Robert Mueller's team for a voluntary interview on Wednesday, according to four sources familiar with the situation.

Investigators appear to be interested in her ties to longtime Donald Trump adviser Roger Stone, whom she has known for a decade. Sources said investigators expressed interest in having Davis testify before a grand jury – the latest indication that prosecutors are still aiming to build a case against Stone.

https://www.cnn.com/2018/08/03/politics/mueller-davis-stone-russia-investigation/index.html