[Sirtel]

Authors leaving a series unfinished is a whole other kettle of fish IMO. That's always a risk with any series, unless the series is already finished by the time one starts reading it.

Sometimes it's not the author's fault. Publishers occasionally decide to cut a series when it has not been successful enough for them, authors have serious health issues or even die and so on.

As to the specific example of Melanie Rawn, I read the first book of her first series and that was it for me. Left me completely cold and uninterested. So I never even got to the Ambrai series.