OA (Zeeko Zaki) is going to have a tough time at the FBI, both inside and outside of work hours.

The case on the May 7 episode, "No One Left Behind," hits close to home for the FBI agent and features guest star Kate Burton, TV Insider has learned exclusively. We also have photos from the episode, which feature Burton, who plays Deputy Secretary of State Evelyn Kates, and OA with his girlfriend Gemma (Comfort Clinton) and the team—OA, Scola (John Boyd) and Tiffany (Katherine Renee Kane)—working the case. Check them out below.

In “No One Left Behind,” the team is thrown into a highly political case after four Taliban members are shot dead and one kidnapped in New York with no proof of entry into the country. Having served in the U.S. Army, the case hits home for OA, who struggles to open up to Gemma about his past in Afghanistan.

Dare we say we're surprised OA and Gemma are still together? They hit a rough patch earlier in the season when her girlfriend was murdered after getting mixed up in one of the team's investigations. There are the differences that have been highlighted and just the simple fact that, as OA's partner Maggie (Missy Peregrym) pointed out in the episode that introduced Gemma, "Being an FBI agent isn't just a job. It's a life. What's rule number one? Never put yourself in a compromised position. You've been dating Gemma for three weeks? We already know that one girlfriend buys coke and the other sells it."