Desc: Tandem: Directed by Bernhard Stephan. With Hannelore Hoger, Vadim Glowna, Winfried Glatzeder, Nina Hoger. Back in the old days when they were young, Katharina, Robert and Rudolph had an open triangle relationship. Now, many years later, Robert shows up at the 25th wedding anniversary of Katharina and Rudolph. Although they had not seen each other in all those years, Robert is welcomed heartily and immediately invited for breakfast.