Rosel George Brown’s 1966 Sibyl Sue Blue is the first of two books featuring detective Sibyl Sue Blue.
1990! A decade after scaled Centaurians began moving to the USA, they have settled in slum ghettos, where they are the newest minority hate target for bigoted nativists, replacing the Italians, Irish, and others of earlier times. Undercover cop Sibyl Sue Blue becomes interested in Centaurians when every Centaurian she encounters tries to kill her. The cigar-smoking widow isn’t putting with any of that; she beats up her assailants. Oddly enough, this doesn’t put a stop to the attempted murders.