You need to add more details. If the person who committed the crime was living in your apartment in violation of your lease your landlord may have reason to evict you.
aggravated robbery
depends on the crime
If someone you know still lives there, you can certainly be your friend's guest. If you were evicted for some reason having to do with violence or other crime, the landlord could have gotten a restraining order preventing you from returning, but that would be unusual.
Embezzlement
Libel
yes you can get triedthink about it this way if someone came to America and committed a crime they would be tried here unless they have diplomatic immunity.
No. Whether or not they remember the crime does not change the fact that they committed the crime.
A criminal is a lawbreaker or offender of the law; someone who has committed a crime.
There is no specific word for this.
.... is called a law abiding citizen.
...as a kind or merciful treatment, moderating the punishment of someone who has committed a crime or transgressed a law or rule.
White-collar crime is a crime committed by someone who is well respected in their career, usually someone in a management job, who would typically wear a suit and tie to work. The crime usually is money-driven and nonviolent and committed for personal gain.