“THERE are an awful lot of things that are plausible and just a few things that are probable.”

Rory Kinnear talking to me about new two-part ITV drama Lucan, which tells a story most will not know.

He plays the Lord who created a headline-grabbing mystery after murdering his children’s nanny Sandra Rivett (Leanne Best).

Having mistaken her in a darkened basement kitchen for his wife Lady Lucan (Catherine McCormack).

And then vanishing – never to be seen again.