In the season 1 finale of NCIS - Unità anticrimine (Episode 23, titled "" or " Doppia identità "), the "useful paper" refers to the intelligence documents and photos that Ari Haswari used to manipulate the NCIS team and lead them into a trap.
Ari provides specific information about a terrorist plot (a plan to attack the President with a drone) that appears helpful but is designed to further his own complex agenda. NCIS - UnitГ anticrimine 1x23
Ari leaves a message for Gibbs to taunt him, establishing their long-running rivalry. In the season 1 finale of NCIS -





