[Loukas]

I've got my suspicions on who killed Lucy.. I'm going with

Spoiler:

Jane!

On BBBOTS John Partridge said "if I tell you, I'll get killed" or something along those lines.. Why would he know who did it? That leads me to thinking it's his sister Jane. I recon she confesses it to Christian on her wedding day, that same day other characters work out it's her too! The last thing Lucy heard was a music box, the same music box that featured over Christmas..? Dunno what that means but my guts saying Jane now..