NCIS (2003)

S12E20 No Good Deed

DiNozzo teams up with his girlfriend, ATF Special Agent Zoé Keates, when new information surfaces indicating that the firearm linked to a murder in an NCIS investigation was initially acquired for the contentious ATF operation known as “Operation Fast and Furious.” As they delve into the case, they must navigate the complexities of their professional and personal lives while uncovering the truth behind the weapon's dark history.