Black Alleges Wealthy Backer Is Behind Conspiracy to Destroy Him

Billionaire Leon Black, one of the most powerful figures on Wall Street, claims lawyers and spin doctors working on behalf of a former lover and financed by a wealthy backer are conspiring to destroy him professionally and personally.

In another turn in the legal saga involving Black and Guzel Ganieva, a former Russian model who has accused him of rape, Black filed a lawsuit on Thursday in New York under the federal racketeering laws often used to bring down Mafia dons.

The suit against Ganieva, law firm Wigdor LLP, and other unidentified defendants carries a tantalizing claim: an unnamed ...