Der Stellvertreter (1918)

Prince Damilo of Cardania, who is besotted by numerous women, wants to return to his strictly shielded and monitored homeland to take up the regency there. In order to be able to travel undetected, the ruler-to-be asks Stuart Webbs to slip into his role for a while while he takes off in disguise. The detective has every effort to keep the numerous people who want to gather around him in his role as Prince Damilo, including a fellow detective named Sanftlieb, at a distance. With the help of the envoy Cartagi, however, he is able to plausibly hold the princely position until the true regent has reached his home.