I'm editing, editing, editing Bound at the moment, and the process reminded me of a wee whoopsie I experienced when editing Containment.
There were quite a few young male characters in Containment, and as part of my research I'd checked out the most popular names for babies when they would have been born, thinking I was being clever. My publisher said nah, they're too similar, it gets confusing for the reader, change them, make them more distinctive. So I had a good think, picked some different names and went about swapping them using the Microsoft Office 'find and replace' function.
One of the characters was named Chris. Fine, I thought, I'll change him to Leo.
Typed Chris into 'Find and Replace' to change to Leo, elected 'replace all', pressed enter.
This is where I discovered quite how often Sam Shephard takes the Lord's name in vain.