Inspector Sun and the Curse of the Black Widow is a wildly creative, creepy-crawly whodunit with slick CGI animation and big laughs. The premise has anthropomorphized arachnids, cockroaches, beetles, ants, flies, and locusts embroiled in a period murder mystery aboard a transpacific flight. The miniscule ensemble exists alongside humans but largely remain out of sight. That changes as the clever plot thickens and unwitting bipeds are hilariously tossed into the fray. The film has a degree of complexity that does require a modicum of attention. This isn't a brainless kids adventure for casual viewing.