S:3 E:20
Burn Rate
When Don investigates a series of explosions, he calls in Charlie to help pinpoint the bomber, but the two disagree over the identity of the culprit., Don and Charlie hunt for a serial letter bomber and disagree over whether a key suspect, who eluded conviction once before, is responsible for the latest murder., Investigating a serial bomber, Don and Charlie argue over whether they are facing a previous offender or a brand new terrorist.
