Falling through the sea

'This is the story of how I died.'. That's all that was written on the post-it note stuck to the front of what I suppose was her diary. It has to be. Dead people can't write stories. It's been a year since 'the day it all started' and I guess I should be over it by now but she was my best friend. It's not that easy. I haven't read it yet but I suppose I'll have to if I want to type it up so may I present to you the last two months of Cassiopia 'Cassie' Sofia Worrrun's life.

OR

When Cassie's mum dies, the police think it's suicide; after all she died from falling off a cliff, but the night after her mother's death Cassie receives a riddle that puts her on a different path. However, the closer she gets to the truth, the more someone tries to stop her.