Ken Shannon #10

Private detective Ken Shannon investigates a case involving mysterious Venusians who have infiltrated a neighborhood, posing as humans while hunting for something valuable. When a man named Pinchor reveals that three Venusians matching names from a list have been spotted in the area, Shannon and his associates begin a door-to-door search to locate them before they can find what they're seeking. The investigation intensifies when a body is discovered and Shannon must track down the extraterrestrial imposters before they complete their mission and disappear.