Former “Apprentice” contestant Summer Zervos is on a mission to prove President Trump is the real liar in her defamation lawsuit.

“We are gathering evidence that we believe will prove that defendant lied when he falsely denigrated Ms. Zervos and denied sexually assaulting her,” the woman’s attorney, Mariann Wang, said Wednesday.

Wang has issued two subpoenas to the Beverly Hills Hotel and MGM Television Entertainment, which owns “The Apprentice” archives, for evidence about Trump’s interactions with the former reality TV contestant.

Zervos claims Trump groped her and pressed his groin against her at a private Beverly Hills Hotel bungalow in December 2007. When Zervos made the accusations just weeks ahead of the 2016 presidential election Trump called them “fiction,” claiming she’d concocted the allegations for “personal gain.”

So Zervos sued Trump for defamation in 2017.

A Manhattan judge greenlighted Zervos’ defamation suit in March, tossing the president’s argument that he was immune to civil suits because of his job as the nation’s commander-in-chief.

“No one is above the law,” Manhattan Supreme Court Justice Jennifer Schecter wrote in her ruling. Trump has appealed the decision but Zervos is moving ahead with her case.

The first subpoena seeks “all documents concerning any stay by Donald J. Trump at the Beverly Hills Hotel at any time between Jan. 1, 2005 and Jan. 1, 2010, regardless of who paid for such stay.”

It demands information about reservations made for Trump under his real name or any “fictional” identity, surveillance videos of the hotel’s entries, common areas, and bungalows, and room service orders.

Wang is also fishing for information about the presence of Trump’s bodyguard Keith Schiller, his longtime assistant Rhona Graff and Zervos at the swanky hotel.

The second subpoena, served on MGM, demands “all documents concerning Summer Zervos” including video and audio recordings from the tapings of “The Apprentice.”

It seeks all recordings “that include any mention or discussion by Donald J. Trump of Summer Zervos.”

The information sweep shows that Wang is trying to build a case that Trump is a serial sexual harasser.

She’s asking MGM for “all video and audio recordings that include Donald J. Trump talking or commenting on female candidates or female potential candidates of any season of “The Apprentice” in any sexual or inappropriate manner, including without limitation any statements or comments by DJT concerning any female candidate’s or potential candidate’s body or body parts and/or his sexual or romantic desire or intention concerning any female candidate or potential candidate.”

Wang wants all the information turned over by the end of the month, and warns that a failure to answer the subpoena could result in a contempt of court finding, meaning possible jail time or a fine.

She also plans to depose Beverly Hills Hotel employees.

A spokeswoman for the hotel confirmed that she received the subpoena, but otherwise declined to comment. A rep for MGM did not immediately return a message.

Trump’s attorney Marc Kasowitz also did not return messages.