Rich Assistant and Down-And-Out Detective

A beauty-hunting killer who specifically targets women will always leave a black calla lily at the scene; A strange but well-rewarded commission; an island with strange legends. A male and female detective team embarked on a luxury cruise ship named "Anlan". A diamond with bad luck, a notorious gem thief! Fishing boats with no survivors, murders one after another, beware of the other you! In the vast sea, who is the real murderer?