ABSCAM, FOR ONE is a reference to the FBI STING operation of the same name that took place in the late 1970s and early 1980s. The crossword solutions for this term are HAUNT (5 letters) and STING (5 letters). HAUNT refers to the fact that the FBI's investigation into political corruption haunted the public officials involved, while STING refers to the fact that the FBI used undercover agents to conduct a STING operation to uncover the corruption.