Homeland security expert Juliette Kayyem has proven to be pretty prescient when it comes to the investigation into the Trump campaign's ties with Russia.

In October, she predicted that something big was going to drop in the Mueller investigation by Thanksgiving, and just a few days later came the indictment of former campaign manager Paul Manafort. Back in June, she predicted that former National Security Advisor Michael Flynn was cooperating with the FBI. Now, six months later, it has been confirmed: Flynn pleaded guilty to lying to the FBI and is cooperating with the special counsel's investigation.

So what's next? Kayyem, who is also the CEO of Zemcar, thinks White House counsel Donald McGahn is the person to watch.

According to reports from CNN, McGahn told Trump in January he believed Flynn had lied to the FBI and should be fired. That raises questions about what Trump knew — and what he was trying to accomplish — when he allegedly told former FBI Director James Comey in February to drop his investigation into Flynn.

"Don McGahn has a decision to make if he did, in fact, tell the president that Flynn had lied to the FBI," Kayyem said. 

"McGahn is being set up, and I think he actually might recognize that he's being set up ... and turn, or just tell the truth," she said.

Click the audio player above to hear the interview in its entirety.