Staffer who helped probe collapse of MF Global joins law firm

"I can do advocacy for clients, but I can also work on litigation," she told The Hill. "That sets us apart from other lobbying shops because we can service our clients in two ways. That’s not always an option at other places in DC."

"I thought I was going to have to pick which way my career went," she added, referring to the law and lobbying world, "and now I don’t have to."

Steve Ryan, partner and head of McDermott’s government strategies practice group, called Turner a "seasoned" congressional investigation counsel in a statement on Monday.

“We will be even stronger with Anne Marie’s deep congressional investigations background,” Ryan said.

Prior to her hire, Turner worked as a senior counsel for the House Financial Services Subcommittee on Oversight and Investigations. In that role, she managed the committee’s report on the failure of MF Global, a hedge fund that had been managed by former New Jersey Gov. Jon Corzine (D).

Turner worked on Capitol Hill for about a decade, beginning as counsel for former Rep. Tom Davis (R-Va.) while he served as chairman of the House Oversight Committee and later becoming lead committee staff on the investigation into steroid use in professional sports.

After that, she worked in the office of former Senate Minority Whip Trent Lott (R-Miss.), working on telecom, transportation and consumer protection policy.

"For the majority of my government career, I’ve handled investigations," she said. "I'm really looking forward to helping clients on the other side of investigations," whether it be an investigated entity or a witness called to testify before Congress.

Getting a phone call or letter from a committee can be "equally as stressful" as being the subject of an investigation, she says. She plans to "[guide] them through the process and [help] them navigate the waters."

Turner began her stint at the firm two weeks ago.

This post was updated at 3:07 p.m.