It helps to have friends in high places. Except if you're Gabriela Dawson.

In this exclusive sneak peek from Wednesday's episode of Chicago P.D. (10/9c, NBC), Gaby (Monica Raymund) is none too pleased with her brother, Antonio (Jon Seda) and his refusal to arrest Elliot Gish, the man suspected of setting the fire that killed Shay (Lauren German). And she's not afraid to voice her disapproval.

"You need to arrest him," Gaby angrily tells her brother. "You make something up. You throw him in the pit and you never look back."

Exclusive Chicago Fire sneak peek: Severide comes face-to-face with Shay's killer

However, it's not so easy for Antonio to just switch into classic Voight mode. But will he do it for his sister? Check out the exclusive video below to see their heated confrontation and Gaby's threat to her brother:

Next week's crossover begins on Chicago Fire on Tuesday at 10/9c on NBC and continues on Chicago P.D. on Wednesday at 10/9c.