How long after a person commits a crime be charge?

It depends on the "statute of limitations" in your state and the type of crime. In general, the statute of limitations is anywhere from a few years to ... never in the case of murder.

In addition to possibly being charged as a principal in the offense, they could face charges of - conspiracy - aiding and abetting - accomplice - etc.

Why do you ask questions? Because you want something. They wanted something too. Wither it was to kill a person, or steal something, or rape someone. All these things happened because they wanted...

the simple answer is because they are desperate of losing their house or apartment. After being laid off and looking for employment people have nothing else to loose but to commit a crime to help...

If you were with a person who committed the crime, you are an accessory to a crime. (There are exceptions. It depends on what you mean by the word with. If you were with a person and totally unaware...