Imposters in paradise

I've come to Bermuda to find out what happened to my brother. They tell me that his death was an accident, but I don't believe them. Fate has given me the perfect opportunity to discover the truth, without putting myself in danger. I've taken the identity of Isadora Hart, so no-one knows that I'm really Imogen Dacres. I can't even tell Morgan Dax - the man with whom I've fallen so deeply in love - because I'm still not sure that I can trust him one hundred per cent ...