"Gibbs ignores the bureaucratic paperwork associated with his "acting" director duties and leads an investigation for a murder victim found in a taxi headed to NCIS headquarters. Meanwhile, Jenny discovers a secret about her past."

"As the NCIS Director returns from a controversial European junket, and Gibbs and his agents reluctantly prepare for Homeland Security polygraph tests, tightly woven secrets among the team unravel."

"The final showdown between the NCIS team and an elusive arms dealer reaches an explosive and deadly conclusion, on the fifth season premiere of NCIS."