For those of you who don't already know, I'm a writer.  I've gotten non-fiction articles, devotionals, and reviews published, along with running my three websites (this one of them). 

I'm also working on my second book.  The first was a murder mystery/thriller, and I'm still looking for an agent for it.

I cannot decide what to do now.  I had pretty much decided to go with number 3 and then today I got another (surprise) check in the mail for a devotion I sent out months ago.  So I don't know if the "Christian writing ro- here are my choices:

1) I have a book started that is based on the (fictional) story of a woman in the first century who was a disciple of Christ.  She goes and spreads the word of Christ to other women in some of the same cities that the apostles visited.  I have done a ton of research, and feel comfortable writing it.

2) I have a another murder mystery half-done.  But to  be honest, writing about the same topic is getting a bit stale for me.  But I am talented at that type of writing.

3) A third book, not started except for a vague outline, based in the future.  It's not sci-fi, it's more a "consequences of our actions, sociology viewpoint" book about how human behavior while sometimes cruel and pointless can also be inspired and amazing under certain circumstances. 

I've prayed and simply cannot decide which of these three to pursue.  I need to focus on one of them, as I am busy with other writing (non-fiction articles, devotionals, stories, etc). 

What is your opinion?  Pick an option or give me advice or whatever. 
Thank you in advance,
God's blessings,
Jennie