Baritsu is the name given to a form of martial art described by Sir Arthur Conan Doyle in the Sherlock Holmes story "The Adventure of the Empty House", the first of The Return of Sherlock Holmes, to explain how Holmes had managed to avoid falling into the Reichenbach Falls with Professor Moriarty as described in the story "The Final Problem", first published in Strand Magazine in December 1893.
It is almost certainly a misspelling of the real martial art of bartitsu, which existed in Britain around the time Doyle's novels were written.
By the 1890s, Conan Doyle had become weary of chronicling the adventures of Sherlock Holmes. He had ostensibly killed Holmes off in his 1893 story, "The Final Problem", in which Holmes apparently plunged to his death over a waterfall during a struggle with his archenemy, Professor Moriarty.
However, such was the public clamour for the fictional detective’s return that Doyle capitulated and revived Holmes for another story, "The Adventure of the Empty House", in 1901. As Holmes himself explained his apparently miraculous survival:
You've got style looking so sharp
Rocking hot smile you're gonna go far
Believe in yourself
You don't need to be who you're not
All that you need is all that you've got
Just believe in yourself
You should know what you are
Money can't buy
'Cause you should know
It's all about you
It's not about the money you make
It's not about the little mistakes
It's not about the people you know
You'll be fine on your own
It's not about the clothes that you wear
It's not about the car, I swear
It's the little things you say and you do
It's all about you, it's all about you
Have fun in all that you do
Listen to your heart, it's always so true
We believe in you
You can't stop, reach for the stars
Time will tell, tell people who you are
We believe in you
You should know what you are
Money can't buy
You should know
It's all about you
It's not about the money you make
It's not about the little mistakes
It's not about the people you know
You'll be fine on your own
It's not about the clothes that you wear
It's not about the car, I swear
It's the little things you say and you do
It's all about you, it's all about you
If things are spinning around
We'll pick you up when you're down
You don't have to worry my friend
You should know it's all about you
It's not about the people you know
It's not about the seats at the show
It's not about the places you go
It's not about the money you make
It's not about the little mistakes
It's not about the people you know
You'll be fine on your own
It's not about the clothes that you wear
It's not about the car, I swear
It's the little things you say and you do
It's all about you
It's not about the money you make
It's not about the little mistakes
It's not about the people you know
You'll be fine on your own
It's not about the clothes that you wear
It's not about the car, I swear
It's the little things you say and you do
It's all about you
It's not about the money you make
It's not about the little mistakes
It's not about the people you know
You'll be fine on your own
It's not about the clothes that you wear
It's not about the car, I swear
It's the little things you say and you do