A Gust of Ghosts — Suzanne Harper

Evidence
1. The mournful, eerie sound
2. A cool, silvery glow
3. Unexplained voices

Possibilities
1. Vampires
2. Ghosts
3. Mermaids
4. Werewolves
5. Fairies

To do
1. Visit the graveyard
2. Record evidence in logbook
3. Save Mom and Dad's job
4. Reset the camera trap
5. Come up with the plan of a lifetime -- and make it a super-tricky one!
6. Ask Henry to help