三年前，他因为没能逮捕一名神秘连环杀手而离职求去。现在，一桩新的伦敦命案则驱使这名警探重出江湖，挺身缉凶。。Film version of Melvin Van Peebles' Broadway musical. A pair of devil-bats take human form and crash a Harlem house party in an attempt to break it up. But somehow, their attempts to ruin the party fail.。