Lack of inspiration...

[Krensky]

Make sure that for every clue they need, it shows up three to five times.

Also, don't be afraid of the rule of three. If it doesn't matter which person did it (ie the Agatha Christie line up) then their third answer is the right one. Although, you should vary the number from three to help cover it up.

[Desertpuma]

Don't forget: motive, method, & opportunity

This is totally the TL;DR of my post.

Yes, it is. Simplest terms, most convenient definitions.

Don't forget about a False Flag murder where the killer was hired by someone who works for a different party than the killer thinks. In other words: A is hired by B who A believes works for C but B actually works for G.

[VisualStatic]

Don't forget about a False Flag murder where the killer was hired by someone who works for a different party than the killer thinks. In other words: A is hired by B who A believes works for C but B actually works for G.

I read that and totally thought of From Russia With Love.  My brain is finally I think starting to get it.....