Lascha and Tami are standing in a tub being washed by an older man. Both the boy and the girl is covered in soap but it's very brief frontal and rear nudity.
The boy's father, who is a doctor, goes insane when he is unable to save his son's life. Convinced he can make the boy immortal, he places the dead body in a bathtub and pours some kind of formula over the body and then washes him with the formula. Full frontal nudity.