Answer: A Comprehensive Background search may include:

Criminal Record Search
Civil Filings and Civil Actions
Misdemeanors and Felonies
Arrests and Warrants
Convictions and Incarcerations
Address History
Phone Numbers
Email Addresses
List of Possible Associates
List of Neighbors
List of Relatives
Alias/Maiden Name Check
Property Ownership Search
Date of Birth
Area Sex Offender Check
Spouse/Roommates Locator
Neighborhood Statistics
Neighborhood Check

Sample Report