The Amanda Knox story is one step closer to bookstores everywhere -- TMZ has learned, she's signed with a very powerful literary agent in DC.
According to sources, Amanda recently inked a deal with lawyer/lit agent Robert Barnett -- who has brokered book deals for some of the biggest names imaginable ...
Barack Obama, Bill Clinton, George W. Bush, Hillary Clinton, Sarah
Palin and Dick Cheney ... to name a few.
Our sources say Amanda's Italian ex-BF Raffaele Sollecito -- who was also convicted and then exonerated in the murder of Meredith Kercher -- has signed with a book agent of his own ... Sharlene Martin, famous for brokering deals for several NY Times bestselling authors.