Warm up your fingers...
I am involved in a custody battle almost 2 years in the making. We've been to GAL's, forensics evaluators and now a court appointed CSW parenting session.
The internet has everything you need. Most for free. Weve dug up more dirt than we could have ever imagined.
We also supplied everyone with a thorough, specific, factual chronology. No he said, she said stuff.
We supplied our evaluator with phone records, phone logs, DMV records, hospital records, prison records, arrest records, house records, bankruptcy records, tape recordings, video etc., etc., etc., and most for free.
Start with searchsystems.net
run free public records searchs
PI websitessearches
try background check gateway to find out how to order
most states have a website for court info, that will at least track recent arrests pending trials. They're websites for federal and state prison.
And keep searching.
Good luck