A crooked agent, a dead agent, and somebody's watching

As expected, something's amiss about the two FBI agents, we could see it way back, but now we're getting more facts. You can't say it's clear, nothing's clear in "Damages," but as we near the end of season 2 (episode 10), as we get closer in time to the "shooting" scene that opened the season (now "6 weeks later" - the structure of "Damages" tells the whole season in flashback from the opening sequence, gradually moving closer to that moment in time) we see for sure that one of the agents (the white guy, does he even have a name?) is in touch with some outside forces - perhaps Frobisher? or Patti? - and when found out has his partner killed (and the killers make it look like a drug OD). We also see the agent monitoring the "shooting scene," as Ellen threatens and maybe shoots Patti. And we see him monitor (video surveillance) a hotel liaison between Purcell and Claire, so what's going on there? What is the FBI really interested in, if in fact he is working for the FBI? Meanwhile, Patti's son apparently involved with a very counterculture tatttooed girl whom he doesn't want to introduce to Patti; instead, get an older woman to pose as his girlfriend - not sure the motive there. Hey, it's "Damages." Do the writers even know at this point? Let's hope they're in control, that someone's in control, because we're getting close to the wrap, and I'm not sure anyone can tie together all these strands in 3 remaining episodes. As Marge points out, every character is evil or potentially evil in some way - with exceptions of Ellen and Katie.