When they arrive at her apartment, she's there with a bunch of cop friends of Kralik's -- Jensen, Crane, and Foster -- who just happen to be from the Fugitive Apprehension Team. There's some predictable tension, especially when Elliot asks the other cops whether they were close with Kralik in the past, employing his usual finesse (that being naked suspicion). That gets them kicked out of the apartment by the three cop friends.
Leaving the apartment, Elliot bitches about Chester not trusting them, and Olivia reminds him that dumping Fin's phone wasn't exactly a trusting move on Elliot's part, and that he needs to make it right. Yeah, Elliot. Take Fin out for ice cream or something.
Back in the squad room, the gang is discussing how to tie one of the inhospitable cops to Kralik when Munch hears from the lab that the dead girl had Kralik's DNA under her fingernails. So there you go. Furthermore, the rape kit also had a semen sample from a second donor, although it was too degraded to identify. While they're still bummed about not being able to bust someone for that, Cragen comes in to report that Chester's hunkered down somewhere in an abandoned building.