Larrick is one creepy SOB. I didn't really like Kate, but yikes. Despite not liking her as a handler, at least she was smart enough to stash a gun and get a message to Phillip and Elizabeth. I'm surprised Larrick didn't try to torture information out of her either, but I tend to think she provoked him into killing her so she wouldn't give up any intel rather than potentially cracking under torture. She was going to end up dead regardless, but at least she didn't willingly give up intel.
I find the storyline with Stan/Nina/Oleg/Arkady/Gaad to be very interesting-- who exactly is playing who here? I could believe Stan is playing a long con, given what we know about his abilities to do undercover work-- just because we haven't seen him report to anyone recently doesn't mean he isn't, as we have seen him report to Gaad about the goings on. I could also see him totally being played by Nina/Oleg/Arkady. Also, I believe that Arkady purposefully told Oleg about Nina being a traitor and her being sent back to Russia, knowing that he would tell Nina, who in turn tells Stan. Personally, I feel like Arkady is totally bullshitting them in an attempt to get the Stealth info.
Phillip was really killing it as Ted, the Vietnam vet. Matthew Rhys manages to inhabit all of the the personas Phillip has to take on as part of his spy craft. Please, give him all the awards.