on the night of 19 july 1944, tanz orders his driver, kurt hartmann, to procure a prostitute; tanz butchers her so as to implicate hartmann, but offers hartmann the chance to desert, which he accepts. when grau, who is now a lieutenant colonel, learns of the murder, committed in the same manner as the first, he resumes his investigation and concludes that tanz is the killer. however, his timing is unfortunate, because the very next day is the 20 july assassination attempt. while grau is accusing tanz face to face, word arrives that hitler has survived, so tanz kills grau and labels him as one of the plot conspirators to cover his tracks.