Gangster Arnie Kurtz is moving into Chicago's South Side and Eliot Ness very much wants to nab him, putting a 24 hour watch and tapping his phones. The operation is put in danger however when Kurtz inadvertently becomes part of a public health emergency. Against his better judgment - but at his wife's insistence - he agrees to let her brother Benno Fisk deliver $100,000 to a New York mobster. Unknown to anyone, Benno has contracted Parrot Fever from a recently acquired pet and collapses soon after his arrival.