Julie Brandt was killed by Zofia in Seigturm after she was forced by Lothar to stand guard at the elevator doors.
When Abby tells the twins, Zofia and Jessie, about Julie and Lothar’s plan to eliminate them by spiking their wine and killing them in their unconsciousness, they work out their own way and succeed in wrecking the plan. This leads to a very physical combat between both parties and Abby ends up getting stabbed in the eye by Julie.
Julie and Lothar escape from the girls to the Seigturm and Lothar orders for the attack on the resistance to begin. But the destruction of the plan causes him to turn on Julie, blaming all of their failure on her and even holding her at gunpoint after the twins finally caught up with them in Seigturm.
He forces her to stand guard at the elevator doors but when Zofia blasts in, the extreme force causes Julie’s head to be smashed against the elevator doors, killing her on the spot.