Joe had this strange feeling he was being followed and took a stop each time he felt the person's presence behind him. However, after stopping and turning to see who was tailing him, it would appear to be nothing each time he turned.
At one point, he even started to think it was a ghost but since he doesn't believe in such things, he decided to walk a bit faster and hide in a certain corner where he would be able to catch whoever wouldn't stop following him around.
"F**k, we lost him. Where is he?" Nicki murmured under her breath with her eyes going all around when she came out of her hiding place along with Ariana and couldn't find one of Darren's gang members, who they happened to have been following around.
Since they didn't know where Darren currently was, he was the only one she can recognize well with all the thugs Darren walks with, as well as their best shot at finding out where he was.