Lupita Nyong’o in a zombie movie was all I needed to hear to make Little Monsters a top priority at the 2019 Sundance Film Festival, and it didn’t disappoint. The movie was the final item on the agenda of an 18-hour day. I walked in absolutely exhausted, running on the last little fumes of one too many cups of coffee, but within minutes, it was abundantly clear that Little Monsters was just the jump-start I needed. The movie stars Alexander England as Dave, a musician without a proper job who’s got a terrible temper and …