Ex-socialite Ghislaine Maxwell will try to cut a deal with federal authorities during a jailhouse meeting with Deputy Attorney General Todd Blanche, sources told The Post.

Harvard Law professor emeritus Alan Dershowitz, who once represented disgraced financier Jeffrey Epstein, says his former client’s longtime co-conspirator, Ghislaine Maxwell, “knows everything” about the Epstein case and should be offered immunity to testify before Congress.

Alan Dershowitz is calling on the feds to cut a deal with Ghislaine Maxwell and release her from prison ... in exchange for spilling secrets on the dealings of Jeffrey Epstein.