The Deadly Pearl(Black Samurai‪)‬

Sand attacks the empire of New York's deadliest pimp
Her name is Rochelle, and she is only fifteen when she disappears. Her father is a secret service agent assigned to ex-president William Baron Clarke, and when he asks for help, Clarke calls the most capable tracker he knows: Robert Sand, the only black man to ever attain the rank of samurai. Sand combs the tenements of New York's East Village in search of the girl, finally learning what no father ever wants to hear: Rochelle is in the clutches of Pearl, the meanest pimp in town.
Called Pearl because of his exquisite taste in jewelry, he is no ordinary hustler. Kidnapping is his specialty, and the women he snatches for sale overseas are never older than eighteen. He is proud to call his business "white slavery," but his latest victim may be his last. Robert Sand is coming for him, and all the guns in New York won't be enough to protect this Pearl from getting scuffed.