日本高清五ma一区二区三区深夜无ma剧情： The sixth season of Without a Trace began airing in United States on September 27, 2007. Twelve episodes had been completed before the WGA Strike. A further six episodes were produced after the end of the strike, making this the shortest season of Without a Trace at 18 episodes. This season included a cross-over with CSI: Crime Scene Investigation involving Jack and Gil Grissom..