Tetrodotoxin

Exactly six years ago, two children's bodies were found in the woods. They were six-year-old twins with copper-red hair. Commissioner Lena and her colleague Toni from the Soko Twins have not been able to find the children's murderer to this day. He left clear clues about his identity. The unusual poison of the pufferfish was chosen by the murderer as a weapon. Now, two six-year-old twins with red hair have disappeared again. Lena Hubermayer and her colleague are investigating once more. But time is running out for them.