Alex is on the run and must outsmart Liam and his team to get into her apartment for anything that could help clear her name. Meanwhile, in a flashback to Quantico training, the NATS are tasked with finding a needle in a haystack while looking for potential threats to national security.

At Quantico, the recruits are tasked with performing a hostage rescue training exercise that shakes Alex, making her question her ability and whether she should quit Quantico. While in the future, Alex continues to search for clues, finding one that questions the innocence of one of her closest classmates. But is her clue really what she thinks? No one is who they seem.