VANDALISM!

Another quality post brought to you by Steve!

You guys!  I'm all aghast!  I came home tonight to find that someone had vandalized all the covers of my sophomore novel, THE GHOUL ARCHIPELAGO!  Who would do such a thing?  And why?  They're all so cryptic...is it some kind of criminal argot?  Or the ravings of a madman?  Or some kind of...apocalypse cult?

I thought I'd share it with you smart folks to see if you can pick up on any clues.  If you learn anything of value, please contact the Patusan Police Department immediately or leave it in the comments below.  In a surprise show of solidarity, the President of Costaguana has promised a substantial reward for anyone who can provide any information that leads to the arrest of these malcontents.

And to add insult to injury, this all had to happen on a week when it was on sale for only $0.99!  Some people just have no decency.

This is the worst one of all.  Why would they say that?

Whose initials are SDM?

This is some kind of religious one.  Does
anybody know what it means?

There's that name again.  Is he really just
some art salesman?

I don't know!  It's not the same person
whose initials are SDM, is it?

I guess that's the real question, isn't it?

Here's another Bible verse.  Was it a cult?

Is this a warning?  Or a threat?

Is this a quote?  Does anybody recognize
it? And who's SF? Any relation to SDM?