William C. Dietz 
Imperial Bounty [EPUB ebook] 

The interstellar bounty hunter returns in this adventure by the New York Times–bestselling author of Galactic Bounty. Since her brother's absence, Princess Claudia has seized the throne and brought the Empire to the brink of war with the Il Ronn. Only the missing Prince Alexander can stop Claudia's plans–and Sam Mc Cade has only three months to find him. But Princess Claudia controls the Imperial Fleet and will stop at nothing to keep Mc Cade from bringing in his imperial bounty?