Panic Little, brown

Things are going well for young filmmaker Evan Casher -- until he receives an urgent phone call from his mother, summoning him home. He arrives to find her brutally murdered body on the kitchen floor and a hitman lying in wait for him. It is then he realises his whole life has been a lie. His parents are not who he thought they were, his girlfriend is not who thought she was, his entire existence has been an ingeniously constructed sham. And now that he knows it, he is in terrible danger. Evan's only hope for survival is to discover the truth behind his past.