When Judy is looking up on the case she finds, along with Nick, that there's a laboratory in a vehicle which processes a blue chemical to be sold in the market. While the chemist is making the preparation, he receives some other characters at his door so he interrupts his phone call explaining: "Woolter and Jesse are back, so I'm leaving now."
All the set up seems a general reference to the Breaking Bad series (2008-2013). Is there any important reason to make this reference. Just a cultural tribute or something else?