Charlie Chan and the Curse of the Dragon Queen (1981)

Renowned detective Charlie Chan is drawn back into action from retirement to assist a San Francisco investigator with a baffling string of murders. Accompanied by his clumsy grandson, Chan navigates a web of intrigue and danger as they confront the enigmatic Dragon Queen, an old foe who emerges as the main suspect. As the duo delves deeper into the case, they must unravel the secrets behind the killings and outsmart a cunning adversary, blending tradition with modern sleuthing in this thrilling mystery.