The Evidence Against Neptune.

1. You could say he's got a small obsession.

2. The stalker-ish photo collage on the boathouse's wall is evidence enough of this.

3. He's obviously in love with Ate Fleet, one of the show's producers.

4. And we've learned she is about to be sacked.

5. Surely that's motive enough for murder.

6. And he was recently right outside the bedroom window of cabin 105.

7. His unrequited love once more gives him away.

8. We know he's handy with a knife.

9. There's a carving of a heart on a tree just out the window of cabin 105. It's freshly carved, and the initials stand for Neptune and Ate.

(SOLUTION FOLLOWS)

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10. Ate Fleet herself is his motive. The carving places him at the scene.