0ca5e1a6_play_Table___Character_Secrets_play_table___character_secrets_Secret
[D8] 8. [Examples] Suzie's only clue of her wild past is that tattoo on her thigh; nobody can ever guess what those initials stand for, especially her husband. Langstrom is the best archer in town, and holds his position of Regent's Marshall very seriously; this would all be ruined if anyone ever linked him to those cat-burglaries a decade ago. As a neurosurgeon, it's essential Dr. Shaefer has a clean past, and that his side business of selling painkillers and unwanted organs is never discovered. [Secret] 
The character did things to make money that he or she isn't proud of. That might still be the case. It might be petty theft, prostitution, dealing in illicit substances, or working for or with someone involved in these or more serious things.
Thief on the Flats: Random Roleplay Table - Character Secrets
Secret