Skilled Bug Investigation Illustrated - Do we already know about this problem?

In a presentation titled Skilled Testers and Their Enemies, James Bach identifies the steps involved in skilled bug investigation:

The following post is part of a 13-part series illustrating those points using A Study in Scarlet by Arthur Conan Doyle.

Is this problem, or any variant of it, already known?

“‘Then, of course, this blood belongs to a second individual — presumably the murderer, if murder has been committed. It reminds me of the circumstances attendant on the death of Van Jansen, in Utrecht, in the year ‘34. Do you remember the case, Gregson?’

‘No, sir.’

‘Read it up — you really should. There is nothing new under the sun. It has all been done before.’”

or perhaps:

“The forcible administration of poison is by no means a new thing in criminal annals. The cases of Dolsky in Odessa, and of Leturier in Montpellier, will occur at once to any toxicologist.”