… there were very, very rare circumstances where it might occur, such as debt slavery (although this was an archaic practice and unheard of once we get to the Imperial period).
OP, if you are interested: debt slavery is a very interesting feature of archaic Rome. If a citizen could not settle a debt the creditor could sell him into slavery trans Tiberim peregre, which literally means across the Tiber but implies that enslavement of a Roman citizen could not take place within Roman territory. He had to be enslaved abroad and lost his citizenship.
There was also nexum, or debt-bondage, which was distinct from sale into slavery. The debtor retained his status as a Roman citizen and could live in Roman territory. However, this was abolished by the Lex Poetelia in 326 BC, so it might be too early for your story.
You didn’t mention what your protagonist would be accused of, but you could make your villain have your hero enslaved for an unfair debt. The issue of unfair debt was a real one at some periods in ancient Rome, and it is relevant for today’s reader as well.
T.J. Cornell’s Beginnings of Rome is my main source.

/u/RicardoPangle287 on In Downton Abbey and other period pieces the characters have morning suits, d
Dec. 19th, 2025 07:29 amPosted by /u/RicardoPangle287
https://www.reddit.com/r/AskHistorians/comments/1powoar/in_downton_abbey_and_other_period_pieces_the/nuts6gq/
For the upper classes, yes—changing clothes multiple times a day was normal, but not in the dramatic “full outfit swap every few hours” way TV makes it look. Many garments were layered and reused, and outer pieces were changed more than underlayers. Laundry was minimized because shirts, chemises, and detachable collars absorbed sweat, not the suits themselves. It was time-consuming, but the entire system was built around servants and social rules, not convenience.
https://www.reddit.com/r/AskHistorians/comments/1powoar/in_downton_abbey_and_other_period_pieces_the/nuts6gq/