Carlotta Truman Joins the Nachtschwestern

What to do when grandpa discovers the hidden biscuit stash and starts behaving oddly afterwards? Off to the Nachtschwestern, thinks Charlotte, alias Carlotta Truman. There, grandpa (Wichart von Roëll) is in good hands with, among others, Nurse Samira (Sila Sahin-Radlinger).