Normally I wouldn't even bother writing a review over such a monstrosity.
However it's worth noting why this series failed so spectacularly:
Because 1. CASTING MATTERS and 2. SCRIPT MATTERS.
In this particular case, Armitage looks like he landed the role by accident. He plays one thing and one thing only: the confused mature male. He doesn't express anything else throughout the first episode except confusion. He looks confused even when he is looking out the window. Until it's all explained: he wasn't confused, he was "passionate".
What utter crap.
But he is overshadowed in lack of conviction by Ms Murphy.
She is an actress who has played some roles in the past where she was vaguely erotic, but in this particular series, her forced and artificial transformation to femme fatale who simply looks intensely at a father twice and convinces him to fall in love with his son's girlfriend is just ludicrous.
She looks like a stalker or a person with some serious mental disorder, and not for one scene does she manage to justify or explain why an older man and especially a doctor would read her behavior as seductive or sexual.
So basically this all comes down to one simple thing: if you have such a weak script that fails miserably to explain the process through which two people fall in love, like for example the script of "the English patient", one needs to rely on the chemistry, appearance and acting skills of the two main characters.
If you cankot cast people who look the part, and on top of that you can't even give them the semblance of a decent script to express it, why even bother to film one scene?
Let alone a whole series.
This is a complete failure that should have been shelved and not released.