By Judicial Decree 2:

A Bad Break

Karin and Natalie went deep into debt to invest in a can't-miss, no-risk business deal, only to discover that there is no such thing as a risk-free investment. When the deal collapsed, they couldn't repay the bank, which in their world meant they would be enslaved and sold. But that wasn't the worst part: the worst part was that their owner was Rupert Caine, a man who took his pleasure from the suffering of young, beautiful girls like them.

Set in a world where enslavement for debt is the law, this is the second book in By Judicial Decree series by a master of BDSM fiction, Commander James Bondage.