Sue meets Jack and Bobby's FBI Mentor when he brings the team in on a case to sting a North Korean terror group - but Sue discovers that things are not as they seem. Meanwhile, Lucy reconnects with her old high school love - with surprising results.

Sue and the team must infiltrate a Chinese drug-smuggling ring, requiring Bobby to go undercover at the gang leader's nightclub - as an Elvis impersonator. And Sue learns that her friend Troy has an estranged brother - and that the estranged brother has a secret.