Board Thread:Episode Discussion/@comment-34633327-20171118002715/@comment-27312496-20171119011459

ChishioKunrin wrote:

So, the reason that Grimm die when they're caged is still anyone's guess, but it's probably not starvation. Could be a fail-safe Salem made. If the grimm can't escape then it self-destructs to insure that no one can figure out anything useful from them.