Yup, although I'm still trying to find a non-supernatural reason for the suppressed hammering noise. A loud TV or stereo? Good soundproofing? Molten nails from the fireplace pushed through the flesh/wall/joists?
It occurs to me that I have to use different ways of killing the clergy to provide a little variety from crime scene to crime scene. Technically, the killings are supposed to include (apparent) natural causes, suicide, accident and murder. I think I'll save the crucifixion until near the end of book one. Save it for someone special.
I don't want to be gruesome, though, with blood and entrails everywhere, since I want a teenage and adult Christian audience. Admittedly, the Apocalypse is violent, but not gory. I'll hurl a few crows against car windows to make up for it. :-)
My FBI profiling book says there are generally two kinds of serial killers: disorganized mentally ill ones who are usually caught quickly and highly methodical psychopaths like Ted Bundy and John Wayne Gacy. The book will probably focus on the latter unless I want to throw in a red herring or two.
I'll return to my original plan that two ailing cardinals died of apparent natural causes (no autopsies deemed necessary) before the story opens, and the first actual case is of an apparent suicide by hanging. I envision another case where two bishops sharing a residence are found lying atop their beds with their upper bodies exposed, each with a cross carved across the chest. The rest of the apartment suite is in perfect order.
Any other good deaths?