Un Lun Dun - China Mieville

 Zanna and Deeba notice something strange is amiss on the streets of London, and after investigating they find a secret entrance to another world.  Here all the lost and broken things of london end up, and some of the people too.  But when they arrive they realise that Un Lun Dun is at war, theirs a dangerous smog, words are alive, theirs a jungle in one of the houses and the giraffes are carnivorous.  Maybe their is a reason they were enticed to Un Lun Dun, and maybe they are the only ones who can save it.

Message In A Bottle - Nicholas Sparks

When Theresa finds a message in a bottle washed up on the beach, she is curious of the author. She manages to track him down and goes to meet him. Theresa, weary of love, after a messy divorce finds herself drawn to him.  

       (Spolier Alert)