S1, E4: The three detectives go away for the weekend to visit Franzi's grandmother, Lotti. She lives in Billershausen, a picturesque little village, the perfect place to relax. However, they must unravel the mystery of the forest witch.

S1, E4: The three detectives go away for the weekend to visit Franzi's grandmother, Lotti. She lives in Billershausen, a picturesque little village, the perfect place to relax. However, they must unravel the mystery of the forest witch.