just a guess from what he said, sounds like she was locked in the apt (what/why she would have to pay for) and that's why the police knocked down the door, and "kidnapping" and/or "involuntarily holding someone (hostage for some material reason?)" might fall under the same law.
It's not my story to share the full details, but suffice to say it was wild and makes extremely good dinner party conversation. At the time though, definitely something out of a horror movie.