Me, the Missing, and the Dead by Jenny Valentine

Me: Lucas Swain—I'm nearly sixteen years old and live in London. I was fairly normal until the night I found Violet. Then everything changed.

The Missing: Dad. He disappeared five years ago. Nobody knows what happened to him, and nobody cares except me. It's enough to drive you crazy.

The Dead: That's Violet . . . in the urn. Speaking of crazy—I know she's trying to tell me something, and I think it's about my father. . . .

A dead lady may not be much to go on, but my dad's out there somewhere, and it's up to me to find out where.