Passthesherry sad, oh so sad, but I think I agree with you re second series.
After Ep5 I was so keen to have the series continue but with all the speculation over possible plot themes, including constructing several in my own head (eg. CJ as war correspondent, (good use of an Arts degree and lots of war experience), British Troops sent to Syria (heaven forbid), Molly in a special secret mission, kidnapped by ISIS, CJ to the rescue etc etc), none offer the sweet, compelling, 'will they, won't they' dramatic tension of series 1.
I really, really hope I am wrong but if they did another series I fear that CJ would not survive! ('Sob'- but leaving Molly free for a third series- although certainly being a 'bit previous' here)
I am pinning my hopes on TG being very, very clever indeed to avoid that prospect. Please!
On reflection, I am just going to continue enjoying Series 1.