Rework: When an Australian find of Nazi-confiscated, priceless coins is stolen in a double murder, a Police Detective must solve another forty year old crime to find the culprit.

The protagonist's goal, the conflict, who's the antagonist. What is at stake if he fails?

Missing a few things here.

The Incit Inc falls upon the rather generic protag. You completely fail to describe the stakes or urgency of the cold case that I assume is the main part of the story.

Give me more about your protag, what he's up against and what forces are working against him. He? MUST solve the cold case, but why and how urgent is it to do?

The nazi coin element does interest me, but is it just there as a rouse, or does it have something to really do with the double murder? I hope it does.