Oddly, this Google Drive link was provided by the Committee itself in its associated press release as opposed to anything hosted on their own site. But you can see (it's the very last line in the release) that as of today, this is the official link.

This press release itself is worth a glance in its own right as it repeats a couple of the names offered by Ms. Kellen as Epstein co-offenders and others the Committee plans to call.

As I noted in the title, Ms Kellen has been named by multiple victims as a co-offender of Epstein. Ms Kellen, for her part in this, maintains that she was herself a victim of Epstein. Either way, she is frequently named in the files and both she and her ex-husband were friendly with Epstein until his death.

From the introduction (page 4):

This is a transcribed interview of Ms. Sarah Kellen conducted by the House Committee on Oversight and Government Reform under the authority granted to it pursuant to House rule X.

Accordingly, House rule X grants the Committee broad jurisdiction for the Committee to conduct investigations of any matter at any time.

This interview was requested by Chairman James Comer as part of the Committee's investigation into the circumstances and subsequent investigations into the crimes of Jeffrey Epstein and Ghislaine Maxwell; the operation of sex-trafficking rings and ways for the Federal Government to effectively combat them; the ways in which Mr. Epstein and Ms. Maxwell sought to curry favor and exercise influence to protect their illegal activities; and potential violations of Ethics rules related to elected officials.