It's one of those insane stories the best Hollywood screenwriter can't cook up.
Elvis Presley and former President Richard Nixon had a meeting. To discuss drug policy. And it's now the subject of a movie.
Kevin Spacey, who also plays President Francis Underwood in "House of Cards," tackles Nixon in the movie, which takes place on Dec. 21, 1970 when Presley met with Nixon to discuss becoming an undercover agent in the Bureau of Narcotics and Dangerous Drugs.
For Spacey, it wasn't about impersonating a man who's been played by actors including Frank Langella and Anthony Hopkins. It was about getting under his skin.
"I wanted to find the essence of the man and particularly his physicality," says Spacey. "He manages to look awkward just sitting in a chair."
Plus, Spacey wanted to tap into another side of Nixon. "He swore all the time. He was grumpy and everyone was an (expletive)," says Spacey.
On set, Spacey did impressions of Bill Clinton. Whom, it must be said, he nails both in accent and tone. But back to Nixon, who resigned in 1974.
"Many years ago, I screen-tested to play Richard Nixon in the film 'Frost/Nixon,' a role I did not (expletive) get. This is basically my revenge film," jokes Spacey.
OnlyOnAOL: Kevin Spacey speaks out about his big 'revenge film'
EXCLUSIVE - Kevin Spacey seen at Netflix 'House of Cards' Academy Screening at AMPAS on Monday, April 27, 2015, in Los Angeles, CA. (Photo by Eric Charbonneau/Invision for Netflix/AP Images)
Kevin Spacey arrives at the 4th Annual Reel Stories, Real Lives Benefit held at Milk Studios on Saturday, April 25, 2015, in Los Angeles (Photo by Richard Shotwell/Invision/AP)
FILE - In a Monday, June 9, 2014 file photo, U.S. actor Kevin Spacey arrives for the European Premiere of Now, at a cinema in central London. A Massachusetts woman, Linda Louise Culkin of Quincy, Mass., who threatened to blow up, torture and castrate Spacey in what prosecutors called a âpersistent and malevolentâ cyberstalking campaign, was sentenced Wednesday, Sept. 17, 2014, to more than four years in prison. A federal judge in Boston also ordered Culkin to pay Spacey $124,000 in restitution for bodyguards.The 55-year-old Culkin has been jailed since January 2012, meaning she has about 18 months left to serve. She pleaded guilty in November to charges including mailing threatening communications, and sending false information regarding explosives. (Photo by Joel Ryan/Invision/AP, File)
Singer Sting, left, and actor Kevin Spacey perform together at the 25th Anniversary Rainforest Fund benefit concert at Carnegie Hall on Thursday, April 17, 2014 in New York. (Photo by Evan Agostini/Invision/AP)
Kevin Spacey poses in the press room with the award for best actor in a television series - drama for âHouse of Cardsâ at the 72nd annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday, Jan. 11, 2015, in Beverly Hills, Calif. (Photo by Jordan Strauss/Invision/AP)
Kevin Spacey arrives at the Oscars on Sunday, March 2, 2014, at the Dolby Theatre in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
Kevin Spacey arrives at a special screening for season 2 of "House of Cards", on Thursday, Feb. 13, 2014 in Los Angeles. (Photo by Jordan Strauss/Invision/AP)
U.S. actor Kevin Spacey is seen during a conference at the Mobile World Congress in Barcelona, Spain, Thursday, Feb. 19, 2009. Some 50,000 industry officials from major cell phone makers, telecom companies and high-technology firms are converging in Barcelona for an annual four-day Mobile World Congress that opened Monday. (AP Photo/Manu Fernandez)
U.S. actor, director and producer Kevin Spacey talks to the Associated Press, about his nomination for an Emmy award for his role in the U.S. television movie 'Recount', in London, Thursday, July 17, 2008. (AP Photo/Sang Tan)
Actor Kevin Spacey poses at the Four Seasons Hotel in Beverly Hills, Calif., Nov. 16, 2004. Spacey both directs and stars in the new biographical film, "Beyond the Sea," about singer and teen idol Bobby Darin. (AP Photo/Ann Johansson)
Kevin Spacey holds up his Oscar for best actor in a leading role in "American Beauty" during the 72nd Academy Awards at the Shrine Auditorium in Los Angeles, Sunday, March 26, 2000. (AP Photo/Kevork Djansezian)
Actor Kevin Spacey waves to the crowd in the Houston Astrodome as he walks to the mound to throw out the ceremonial first pitch of game 4 in the National League Division Series between the Houston Astros and the Atlanta Braves, Saturday, Oct. 9, 1999. (AP Photo/Beth A. Keiser)
Kevin Spacey is all smiles backstage as he holds his Oscar for Best Supporting Actor for "The Usual Suspects" at the 68th Annual Academy Awards March 25, 1996, in Los Angeles. (AP Photo/Damian Dovarganes)