What specific allegations did Katie Johnson make about Donald Trump's conduct in her testimony?

1. The core allegation: repeated rape at Epstein’s Manhattan residence in 1994

Johnson’s central, repeated claim was that in 1994 — when she says she was 13 — she was taken to Jeffrey Epstein’s New York apartment and there was repeatedly raped by both Epstein and Donald Trump, an allegation described in the April 2016 federal complaint and in subsequent retellings of the suit ^{[1] [4]}; the complaint framed the events as recurring assaults at “underage sex parties” hosted by Epstein ^{[5] [4]}.

2. Details in the filings: “sex slave,” coercion, and recruitment for modeling

The April 2016 federal complaint used forceful language, accusing Epstein and Trump of holding Johnson as a “sex slave” and of repeatedly forcing her to engage in sexual acts against her will, and it said Epstein had lured her with promises of a modeling career — language that drove the suit’s sensational contours and was reproduced in multiple accounts of the complaint ^{[2] [3] [4]}.

3. Corroborating affidavits and planned public unveiling

The lawsuit and later reporting say the complaint was accompanied by affidavits from alleged witnesses — including a named pseudonym “Tiffany Doe” who purportedly helped recruit underage girls and “Joan Doe,” a classmate who said she had been told about the assaults — and the woman behind the pseudonym planned a public appearance with attorney Lisa Bloom shortly before the 2016 election ^{[4] [1]}.

4. Procedural history: filings, dismissals and withdrawals

Legally, the matter was messy: the case was first filed in April 2016 under the name Katie Johnson, dismissed on technical grounds by a federal judge, refiled in different forms (including a June iteration and later filings), and ultimately dropped or withdrawn in November 2016; CourtListener and Politico records show multiple docket entries, a dismissal for failing to state a cognizable civil rights claim, and failed service attempts noted by the court ^{[6] [2]}.

5. Identification and contemporaneous statements — later media appearances

Reporting indicates that the plaintiff said she did not initially know who Trump was at the time of the alleged events and later identified him after seeing him on television; there are accounts that the woman using the Katie Johnson pseudonym appeared on camera (sometimes described as wearing a wig) and that the allegations resurfaced repeatedly online and in books chronicling allegations against Trump ^{[1] [7] [4]}.

6. Pushback, denial and questions about authenticity

Trump denied the allegations through counsel, and commentators and outlets have raised questions about the evidentiary record and the person behind the pseudonym; later reporting — notably a San Francisco Chronicle review of documents and emails released around Epstein’s files — framed materials connected to the Johnson allegation as fanning conjecture and explicitly examined whether the plaintiff’s public persona and documentation could be verified, leaving open substantive questions about authenticity that reporting has not definitively resolved ^{[2] [3]}.

7. What the public record can and cannot confirm

The public record reliably shows what was alleged in the filings — repeated rape and sexual coercion by Epstein and Trump when Johnson said she was 13, supporting affidavits and a jagged procedural history of filing and withdrawal — but reporting also shows the case was dismissed on technical grounds and that both verification and prosecutorial outcomes are absent from the record; where reporting raises doubts about identity or documentary gaps, those doubts exist in the sources and cannot be resolved here without new evidence ^{[2] [6] [3]}.