Ghost in the Shell: Stand Alone Complex 2nd GIG Episode 6 DI: Latent Heat Source; EXCAVATION ( Air Date 2004-03-06 ) Genre Action & Adventure, Animation, Crime, Sci-Fi & Fantasy category. Overview "A seemingly run-of-the mill hit-and-run turns into anything but when Togusa investigates. While in Tokyo, he discovers a secret from the past the GSDF is trying to keep hidden deep underground.".