Another fan added: "I loved that they ended it the way they did. It could've been all, 'Louise figured it out, she saved David, yay' but instead it went like, 'nope,

not this time, and now we're gonna murder a seven-year-old.'" They have said the book implies Rob is plotting to kill Adam because he knows Louise is not his real mum.

Another viewer added: "Either 'Louise' has to become more like Louise or Adam becomes a problem to be dealt with." Some fans have suggested Rob had planned to throw Adam

overboard the aforementioned cruise ship. They have suggested a spin-off series should be created, in which Adam discovers the truth about what happened to his mother. READ MORE: MURDER