Hi Secteur-X7, ah thanks but sadly no this isn't it. The scene I mentioned isn't here in the trailer. This is the new trailer when the movie was already renamed to "Spy Master's Apprentice." He made a previous trailer titled "Double Take 2" which had this specific part which is around 10 seconds long:
"A female agent wearing an open jacket with a red blouse (probably red color not sure) is patrolling the woods. Suddenly a man jumps down from one of the trees, land behind her and grabs her cheeks. Her eyes and mouth open wide in shock as the man first turns her neck to her left before jerking it hard to her right, thus snapping her neck. She then falls out of frame.
It's too bad i didn't save the trailer before or kept a screenshot. Possible could have helping in searching for this trailer now :)