Caroline Elliot/Kate McKenzie FanFiction

We all know how series 3 started and ended, although I try to pretend that the last half didn't happen and it finished on the wedding night. This story follows on from the end of series 2.

Dr Caroline Elliot suspects that her husband, John, is having an affair so she hires a private investigator, Kate McKenzie to find out for sure. A Kate and Caroline AU story.

What if Kate and Caroline hadn't been interrupted by Beverley bringing in the tea in series 1 episode 5?