This pill tastes like blackberry

"You take the blue pill: the story ends, you wake up in your bed and believe whatever you want to believe. You take the red pill: you stay in Wonderland and I show you how deep the rabbit hole goes." (c) Morpheus

...and the last pill is violet - take it if the only dream you can see is your biggest fear, if the only thing you believe is pain and nothing - and sleep well. (c) Diver
For Ksana, based on our dialogue about Owen and Burn's attitude to the character he was playing.
I love them.

Deliberation by Katatonia is important part of the soundtrack

And, yep, thank you BBC for the TV series.