Secret Star by Nora Roberts

Book Three in Stars of Mithra -- The final installment of this series.  It followed the same formula of the other two.  A detective needs to solve this break in and another murder, murders of which seem to be stacking up.  Though, when he finds out that the person he thought was dead is not things get much more interesting.  In the end all works out and there is love in the air.  A very simple series to read if you just need to escape into a little fantasy for a while.