There are at least two bands known as Shadow Season: 1) A hardcore band featuring members of Turning Point and Godspeed. They had two releases, both on Harvest Records, a self titled 7" (1991) and a CD EP entitled "starshine" (1995).
The seven inch is not far from Turning Point, the CD EP has no traces whatsoever of hardcore, think the Smiths/Morrissey infuenced pop. 2) A Norwegian/Irish black metal band.

Read more about Shadow Season on Last.fm.