Well, I can't comment on the arrest, but I would start by changing all your passwords for all your accounts to something completely different that they won't be able to guess (don't use a football reference if you are a football fan since the person would probably try them all if they know you like football a lot)
Also, before you change them, check that the email addresses for the accounts go to YOUR email. That way the person can't use the "I forgot my password" feature to gain access again. They probably got to your email first and then used that to get the passwords to other accounts.
As for the legal stuff, your explaination is kinda confusing, and in one paragraph, so not sure how much exact information you are going to get. Plus, I am not sure how much you really want to share in public since this is still pending litigation.
2007 Saturn Aura XR | 1970 Chevy Blazer 4x4 | 1970 GMC 3/4 Suburban 4x4