Nicola Walker and Peter Firth

[Forever Secret]

I watched 5.1/5.2 last night, all the way through and actually

Series 5 Spoiler: show

Up until that point the chemistry between them really is mainly subtext whic obviously PF and NW picked up on, so they really created the relationship between the characters
... Juliet noticed it though in 5.2 (I was actually quite suprised she came out and asked him), and then after 5.2 I think Harry realised his feelings for Ruth were a lot strong than he first thought... From that point the chemistry builds and builds in just 3 episodes before she leaves... its great, creating tension and chemistry like that isn't easy !

Looking back over Series 8 that chemistry is still there, and in Series 9, it just feels different, maybe because they know how they feel about each other now, and they know each other... and because of what happened to Ruth in Cyprus

Chemistry lesson over