In the teaser, a well-to-do couple walking down a Manhattan street at night is alarmed by something they see (invisible to the viewer) through the front window of an upscale coin gallery, prompting them to call 911. When Briscoe and Curtis arrive, they find the murdered gallery owner inside, being examined by the forensic team. However the victim is all the way at the back of the shop, positioned on the floor behind a cabinet in such a way as to make a view of his body from the street impossible.
There are people in the background crossing a street walking backwards.