I've been reading some christian mystery authors lately. There are several who are very good - well-written and suspenseful. The atmosphere and hope that is prevalent in these types of books is always so startling and different than your average secular mystery. Read one and see for yourself what I mean.....
Colleen Coble - http://www.colleencoble.com/
Terri Blackstock -http://www.terriblackstock.com
Other type of Christian fiction:
Tamera Alexander - http://www.tameraalexander.com/