Ninja Knight - Thunder Fox

You cannot reason with a knife blade or the barrel of a gun...Brad and Bonnie, private detectives, have been hired to crack down an underworld drug and prostitution ring by gangsters Tedder and Tiger. But when girls start turning up dead, both find themselves the targets of ninja assassins. But when Bonnie learns that her sister has been murdered, she unleashes all her ninja fury in a blood bath of revenge.