While I was working on the final draft of my novel, I mentioned offhandedly to my editor that the characters were all based on real people. He asked if I’d changed the names, “to protect the innocent,” and I told him no, and that I wouldn’t, because none of the people were entirely innocent. He wasn’t pleased with this, so I made a deal with him: I would find evidence of the guilt of all characters, then proceed to publish on that basis. He told me not to call him for a while, which suited me as I had a lot to be getting on with.
I set about researching and surveilling the named individuals around the clock. Encouraged by some early breakthroughs, I resolved to work on nothing else until I had what I needed to publish, but within weeks the more complex cases were dragging. Bound as I was to carry all investigations through to exhaustion, I took on unrelated cases in my spare time, to finance the core mission. Becoming a licenced private investigator and advertising my services online, I put the novel on the backburner for a little while.
I’m pretty sure that in the end, I’ll prove that everybody did something. My editor has remained mercifully silent on the whole issue.