1926. A former advertising swindler, a former adventurer, a former knight without shame or conscience, and a former event manager for the Ford Motor Corporation - that's who Jake Summers has become now. This is the price of freedom from people like Henry Ford. The one who thought that he had found his favorite thing, something that would make him happy - even if he was a swindler - has now lost the opportunity to be himself. Those with power and money are too powerful, you shouldn’t joke with them. But no matter how hopeless everything may seem, when some doors close, others inevitably open. You just need to look at things from a different angle. Meanwhile in Vienna: a leopard has escaped, several girls have disappeared, and the premiere of Imre Kalman's new operetta: “The Circus Princess” is about to take place. By the way. In this story, Jake Summers’ formula of happiness “favorite business, loyal friend and money” will still find its missing element. The 5th book in the “Five Bucks for Dr. Brown” series is a retro version of the adventurous series “Madame Renard’s Universal Bag.” A quest novel about advertising, friendship and what you love, without which there is no happiness in life.