One Fearful Yellow Eye is the eighth novel in the Travis McGee

Travis McGee

Travis McGee is a fictional character, created by prolific American mystery writer John D. MacDonald. Unlike most detectives in crime fiction, McGee is neither a police officer nor a licensed private investigator; instead, he is a self-described "salvage consultant" who recovers others' property...

 series by John D. MacDonald

John D. MacDonald

John Dann MacDonald was an American crime and suspense novelist and short story writer.MacDonald was a prolific author of crime and suspense novels, many of them set in his adopted home of Florida...

. The plot revolves around McGee's attempts to aid his longtime friend Glory Doyle in her quest to uncover the truth about her late husband and the blackmail

Blackmail

In common usage, blackmail is a crime involving threats to reveal substantially true or false information about a person to the public, a family member, or associates unless a demand is met. It may be defined as coercion involving threats of physical harm, threat of criminal prosecution, or threats...

 which made over half a million dollars of his fortune disappear. It is largely set in Chicago

Chicago

Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

, rather than the usual McGee haunt of Florida.