Brennan’s concerned when he follows Paul and sees him buy a weapon. It’s clear he intends to take revenge on Kate’s killer, so Brennan tries to reason with him, to no avail. Brennan notifies Matt of Paul’s intentions, and the pair set a watch on Paul’s penthouse, while seeking a warrant to take the firearm from Paul. Meanwhile Paul’s organising a large package of cash, and getting in touch wit... (thetvdb.com)