I'm preparing some material because I have the intention of writing a book. I'd do this in every type of work, but considering that I'm writing Crime Fiction, this is even more important.
I've decided already some things: main characters, victim, murderer, even the motive.
But I've come to a great wall that is now blocking my work: the setting. I've checked around in many sites and there's who suggests to go with an invented town or get material on real cities.
I don't except you to suggest me what to do, but I'd like you to give me some tools to help me decide. There's the city layout, then the actual laws in force in that country (I don't want to set it in my country), etc. So, what should I be considering?