MIDNIGHT ANGEL - from 1995.
Not finished with it yet, but WOW. How things change in ten + years.
This books features:
a Russian princess falsely accused of murdering her fiance,
who fakes her death and escapes to England,
finds cover as a governess,
to an older and very arrogant Marquis,
with a hook for a hand,
oh, and the murdered fiance's bloodthirsty brother is seeking revenge.
Yeah, that's a lot of plot devices there.
Also, the hero lost his hand in a fire, so unless that mother fucker kills the bad guy with it, I call bull shit!