From
norsekink:
Loki traveled the realms before the movies. During this time, he lost most of his powers to some artifact or event- anyway, mostly Mortal Loki is stuck doing things the mortal way for 16 years.
Perhaps Lord Holmes was responsible, maybe he just met Loki after whatever had happened... either way, he fell in love and Mycroft Holmes came to be born.
Mummy Holmes was an incredible man, mad as a hatter, and told tales of godly beings and magic as if they were real. He by turns doted upon Mycroft and later Sherlock- and cursed that they didn't show aptitude in magic. Sir Holmes loved the mad intersexed man that had borne him two sons, however work consumed his time. By the time he realized his spouse was deteriorating so sharply, it was far too late, for Loki had finally managed to crack the secret to re-gathering his powers and left. To the family he left behind however, it just seemed that he had run away- that Mummy had scarpered without leaving a trace.
I want this fic like mad... and +1000 Internets to anyone that not only does this part- but also does the Holmes Brothers reaction to the Chaos that happens in Germany and later New York- with a very familiar face on the television.
:D (from anon!OP; Round 8; pg 34)
The Lock and Key, Holmes (1/?)
Sherlock Holmes was eleven when Mummy went missing from Holmes Manor. None know why, if she got lost (as he himself had once suggested at that tender age) was kidnapped (as Mycroft thinks but never said until Sherlock heard him muttering about ransom notes that never came) or run away as Father stated only once. That was the day Daddy became Father, Lord of Holmes Manor. Sherlock does not speak to his Father, considers himself his mother's son, and so disowned himself - keeping only his name, for there is no record of birth for his Mummy only her name as Sherlock knew it - Lady Lockaey Holmes.
Mycroft looked for Mummy for years, so long that Sherlock thinks Mycroft has forgotten how to do anything else for running the Government is a way of looking for Mummy; always Sir Mycroft Holmes knows where she isn't.
Sherlock looked for Mummy in his own way, by mystery and reasoning and observing. It's as good as magic, Mummy had told him with a sly smile as she taught him. Sherlock does not question that there is magic, he has seen it, observed it, real and true magic. Mummy's magic, and Sherlock knows by that bond of mother-son that he would know if she were hurt, or...gone forever.
He helps others find out things if they ask, it wasn't always the answer they had been looking for. Sherlock thinks they should be grateful for any answer at all, they have a answer - he and Mycroft and Father do not. He refuses to think that they never will, he will not give up.
Yet now that he's grown up, Sherlock Holmes demands that the questions asked of him interest him, either professionally or personally; or at the very least, that he is paid for the work he does. That Mycroft insists upon - that, Sherlock can agree with, for Mummy would approve too.
Sherlock prefers not to be reminded of his roots, he avoids manor houses and nobles of most nations. They would know about Mummy. He takes a flat in busy bustling London, with it's people and it's problems - some days, he can forget Mummy, and some days when it is too hot, or chilled and foggy and paints the windows with frost (as his Mummy's windows always were, no matter the season), he remembers and it wrecks him for weeks.
The day he meets John Watson, he is beating a dead body (in a morgue, perfectly legal, he's got the papers)- it isn't, in fact the worst impression he's ever made. It is the most memorable. John Watson has seen worse, he's been in the wars, he is a doctor. He has night terrors, he misses the war.
He's looking for a roommate with a flat. Sherlock takes him up on it - and Mycroft smugly approves, in his own way, offering payment for "keeping up with" Sherlock and the sharing of information. John may not grasp Mycroft's meaning, but Sherlock would be blind not to. Sherlock is many things - but not blind.
It's how he spots Moriarty, like a great big spider sitting on a web that spans the world. And Sherlock can not help but think, that, at long last - this is the clue he's been looking for, a clue Mummy left for him to follow.