TV Entirely unpublicised by Channel 4 and so no one in the UK media, Audible.com is carrying free spin-off audios for Homeland, the first one explaining somewhat were Brodie's been in the first two episodes of the third season.
Homeland: Phantom Pain is narrated by himself, Damian Lewis.
It's not on the UK flavour of Audible, but can be found on the US site here.
Downloading is bit tricky.
If you have a UK account already with the connected Manager software it doesn't show up. But I did manage to get get it to download onto my Kindle Keyboard by "buying the download" then going into my library and asking it to send it to my device, this sentence making even less sense the more I look at it.
You're probably best visiting the website and having a go yourself, to be honest.
But it is interesting how, despite the UK being in step with the US network broadcast, more isn't being made about this over here. Unless they're hoping to produce a monetised version somewhere along the line.
Hopefully there'll be one for all the characters, especially, obviously, Carrie.
"What I like, dread, is when people who know you in completely different ways end up in the same area. And you have to develop this, like, combination you on the spot. "
That sort of thing.