I am a HUGE fan of the Art Lovers mystery series by Hailey Lind (actually two sisters collaborating!!). I was so sad to hear that the series was ending and dearly hope that someone somewhere picks up the next book(s) in this series!
Until then, there is apparently a new series starting - this is from their blog - :
Secondhand Spirits will be coming out July 2009, under the pseudonym Juliet Blackwell.
I'll definitely be on the lookout for that one - and keeping my fingers crossed for more in the Art Lovers series :)