"Sherlock fans are either fiercely loyal or can't stand you. 90 per cent are sweet and charming, but there are a vocal 10 per cent who you think: 'If you put this much energy into saving the whale or climate change you could probably change the world.' They are so angry... I tell them they need a hug and that gets them riled." Actress Amanda Abbington on hardcore fans of her mystery drama Sherlock.