The Case of the Yellow Diamond — Carl Brookins

A dead man on the floor of his office in Minneapolis won't lead P.I. Sean Sean to journey to Yap Island to protect his new client. Bombs in lawyers' cars only jostle him. This short investigator knows the value of research and asking questions in the right places. World War II, Asian diamonds and concrete in Des Moines combine to almost destroy a Minnesota family. In the end, Sean detects flaws in the plans and brings down a criminal enterprise.