actors with and without down syndrome bring herman melville's novel to the stage.t deals with death, insanity, and an elusive white whale. jakob hohne is the theater's director. his brother moritz, who has down syndrome, is among the stars of the theater, which was founded in 1990. down syndrome is a congenital condition, which comes with varying degrees of physical and cognitive effects. jakob: the main point is that people with down syndrome have their own forms of artistic exexession. the way they convey a character is different from the way i might do it. they have different timing and different ideas. i might use language to convey something, while actors with a disability do it with movement. reporter: what begins as an ordinary whaling expedition turns into a fatal quest for revenge. jonas sippel has been with the group since 2015. jonas: acting is a strength that's very important to people with down syndrome. there are people in the theater that have difficulties speaking and are speech-impaired. they can only communicate by acting it out. reporter: in germ