What does tenete eos in tenebris mean in Latin?

Oh, dude, "tenete eos in tenebris" in Latin means "keep them in the dark." So, like, if someone's trying to keep you out of the loop, you can just hit them with this fancy Latin phrase and be all mysterious and stuff. It's like the ancient version of saying, "I know what you're up to, but I'll let you think you're fooling me."