I realize that you are looking for a Mac OS application, but for the benefit of readers drawn to this topic by the search for handwriting recognition, I'd like to mention MyScript Memo and Notes Plus on iOS. They share a handwriting recognition engine that seems to work very well in my hands. MyScript memo has a free version that anyone with an iOS device can try.

(I also see that you are looking to recognize handwritten notes scanned from paper, which these apps will not do. They recognize handwritten notes written directly on the iOS device.)

OCR software for handwritten notes
I feel like I'm particularly bad at any kind of scene where I want to drop clues. I'm hesitant to use the term "crime scene" because it's not always being investigated by "police", and some of these times there isn't any kind of typical evidence.

I'm not even 100% sure that my problem is just the scene, but rather creating enough evidence to begin with. Other aspects I struggle with is witnesses - both witnesses with knowledge, and how to reveal it. Having useless witnesses for flavor, etc. I keep feeling that in general I give too little in these scenes, and everything I give is important.

Since I suspect this is a rather broad problem, I'd like to know if there are any Role Playing resources (sections of books, site, etc) that are specifically geared at teaching this portion of RPG storytelling?

I'm currently playing in the "new" World of Darkness 2.0, but I want answers on this not tied to the game system's rules.
