In Their Blood by Sharon Potts

Jeremy hasn't fit in with his father's desires. He was pursuing a degree in accounting like his mother, but he dropped out and went to Europe. His parents, Rachel and Daniel, came to Portugal with Jeremy's younger sister Elise to "talk some sense into him". He is not going to come home. But things change and he does come home. The night his family returned home from Europe his parents were murdered in their home. His sister had sneaked out to see her boyfriend and escaped the carnage. Can Jeremy become a responsible person and take care of his sister? Why were his parents murdered? He decides to do some investigating on his own. This is a first novel by Potts and I liked it a lot. The plot was intriguing and the characters were flawed - just the way I like them!