Queen of Phoenix: Against Destiny(1990)

With a large amount of money in the balance, a pair of ruthless gangs go to bloody extremes to gain an inheritance and the power that comes with it. Mastermind crime boss Tai Ho specialises in extorting money from those who have recently lost loved ones, through intimidation, blackmail, and murder. Private investigators Ray and Alison aren't much better, and find they can make an even greater fortune protecting Ho's victims. This results in a tangle of brutal betrayal and even more brutal death, both in the streets and in the bedroom...