[Sherlock/Marvel] Murphy's Law

If there are two or more ways of doing something, and one of them will lead to disaster, someone will choose that way. The basic idea is this: if something can go wrong, no matter how unlikely it is, it will.

This is commonly known as Murphy's Law.

An outdated fanfic by an outdated author.

Uses the BBC version of Sherlock's characterizations.

Original plot or plots borrowed from other mystery movies, TV shows, or novels.

P.S. The deductions may be rather childish.

Theme: Be positive, sunny, and kind.