things," declared the chaperone. "It might easily cause flickering lights, though I'm not saying but that some one has been here—the food proves that."
"Perhaps all the ghost is, after all, is lightning, or some tramp, who has made this his headquarters," said Betty. "Mr. Lagg would be glad to know that."
"We'll tell him," suggested Mollie. "It's a pity, while we are here, that we don't solve the mystery of the haunted house. Of course, strictly speaking, we are not in the mansion proper, but we could go there"
"Don't you dare!" cried Grace.
They were going along the passage by which they had entered. The rain was not coming down so hard now, and the lightning and thunder were less frequent. The door was swinging to and fro on its hinges, swayed by the wind which blew in gusts up and down the passage. Mollie was in the rear, carrying one lantern, with Betty in the lead with the other. They had almost reached the outer door, and were eagerly hoping they would see some friendly passer-by when a noise behind her caused Mollie to turn quickly. She saw a tall white object in a proverbially ghostly winding sheet. It had come from a side room.
