Henry Bushkin, who for many years was Johnny Carson’s confidant and lawyer, wrote a book in 2012 called “Johnny Carson,” which was not particularly flattering to the King of Late-Night.

Reports the New York Post’s gossipy Page Six, Buskin is “turning his book into a Broadway musical, and Joanna [Carson is] a big character in the show, we hear.”

Joanna was Johnny’s third wife, the report says, adding, “In Bushkin’s book, Johnny romantically rips up a prenup hours before marrying Joanna — then winds up giving her a $35 million settlement when they split.“