oasting a German and Danish cast, multiple narratives and a remote island setting, eight-part thriller Beneath the Surface is a story of secrets and lies that threaten to unravel the lives of two families following an accident.　　Living on an island paradise, these families – one German, one Danish – have forged a life together, their children living like siblings in a carefree environment. But when a sailing trip goes wrong and one child disappears overboard, skeletons from the past come to the fore, leading to distrust, doubt and the break-up of this previously idyllic life.　　Uniquely, each episode follows events before and after the accident from a different character’s point of view, throwing viewers deeper into the mystery at the heart of the story as the truth is slowly revealed.　　German actor Milena Tscharntke plays Cecile, the daughter of Danish couple Charlie (Christensen) and Jakob (Lindhardt) and sister of Emile (Oskar Belton). Having grown up on the island, Cecile has become close to Kjell (Lukas Zumbrock), who lives with his parents Bernd (Liefers) and Sabine (Schütter) and brother Karl (Anton Petzold). But when Kjell disappears while aboard a yacht with Cecile’s family, their cosseted life on the island begins to crack.