It's parody of Rasputin's song from Disney's Anastasia (1997)
In the dark of the night my heart stopped beating.
And the thought I had was as bad as can be - -
It became boring in fine.
It was like always in fact.
Then I opened my eyes
And the thought was… him!!
I was the most intelligent man in whole world.
Then he thrusted and made a mistake.
I was sure I made him pay
But he somehow got away
Little Sherlock, beware,
Moriarty’s scare!
In the dark of the night evil will find him
In the dark of the night just before dawn!
Ah…