Charlie Chan and the Curse of the Dragon Queen

Charlie Chan and the Curse of the Dragon Queen is a 1981 film directed by Clive Donner that stars Peter Ustinov, Angie Dickinson and Lee Grant.

The prime suspect in the killings is a shady lady known as the Dragon Queen, but soon Chans suspicions fall elsewhere. Among those at risk are Lees maternal grandmother, Mrs. Lupowitz, and even though Charlie Chans son is, as is usually the case, rarely accurate in reading clues, he has the full love and support of Cordelia, his beautiful fiancee.

Source: Wikipedia