There were too many mysteries, that aren't in my line, for me to be really satisfied as to either facts or the causes of them.

Now I'll be able to wash my hands of it, and get back to clean, wholesome, criminal work.

Of course, sir, I'll be glad to know if you ever do light on a cause of any kind.

And I'll be grateful if you can ever tell me how the man was dragged out of bed when the cat bit him, and who used the knife the second time.

For master Silvio could never have done it by himself.