Guest Stars Catrin Striebeck as Sandra Jansen Edin Hasanovic as Thorsten Siebert Luise Bähr as Jennifer Kaminski Denis Lyons as Jerome Vasquez Minh-Khai Phan-Thi as Vu Mai-Ly Alexander Radszun as Rolf Wankura John Keogh as John Sullivan Henning Peker as Homeless Man Megan Gay as Melissa Whitfield Peter Gilbert Cotton as Liam Stern Jonathan Failla as Marc Boland Clara Moeller as Carolina Wankura Christian Serritiello as Gordon Grant Jan-Hendrik Maibaum as Markell Drexler