The season premiere serves as the epic conclusion to the Sidorov story arc.
Here is the episode information for , titled "Ascension" . Episode Overview Title : Ascension Original Air Date : September 24, 2013 NCIS.Los.Angeles.S05E01.HDTV.x264-LOL
: The OSP team continues the high-stakes hunt for arms dealer Isaak Sidorov and two missing nuclear bombs. The season premiere serves as the epic conclusion