In "Blood Doesn't Become Water," the Fly Team spearheads an international manhunt when an American woman and her husband flee to Istanbul after committing a murder in Baltimore. They've taken her young son, complicating the operation.

Special Agent Cameron Vo teams up with newcomer Riley Quinn, but there's more to Quinn's assignment than meets the eye; she's secretly investigating a team member. Amidst the backdrop of this gripping pursuit, the team navigates personal tensions and the murky waters of loyalty, all while racing to prevent further tragedy and uncover the truth.