A MT MARTHA family has taken Halloween festivities to spine-tingling heights after turning their front yard into a frightful spectacle.“It’s something we do every year and it’s gotten bigger and bigger every year; we just love it because it just brings the whole community together,” Sarah said of her Lynch Court home. “Every year we get about 400 trick-or-treaters … you can’t even drive down the street, there’s just kids everywhere.” Sarah said her kids Harvey (pictured), Hadley and Hugo look forward to Halloween for all the adventure it creates. The home’s un-boo-lievable display covers the whole front lawn and…