CRIMSON ANGEL, by Barbara Hambly
and a blatant daylight attempt is made on Rose, Benjamin understands that, like it or not, in order to save his family he must get to the bottom of the mystery. They flee under cover of night to Barataria Bay, at the mouth of the Mississippi, then catch a boat to Havana, where the first member of Rose's slave-owning family lives in splendid isolation. From there, it's a progression of increasingly perilous days until - deep in the treacherous hills of Haiti - the final, hideous "treasure" is found. Excellent tale in a series of excellent tales, this is a 5. While the scenes involving slavery are disquieting, they are chillingly real.
Find the author at www.barbarahambly.com