"Wait a minute, Dad," called Penny. "I'll go with you."
They entered the building, which was little more than a one-story frame shack. The door had been left unlocked, yet Judd Kilkane's office appeared to be deserted.
"This is annoying," said Mr. Nichols. "He's probably out to supper, but it means we may have a long wait."
"We ought to tell Walter Crocker," returned Penny. "Dad, I don't like that fellow. He gives me the creeps."
"He is a bit queer," the detective admitted with a short laugh.
"Dad, do you suppose——"
"No," interrupted Mr. Nichols, "I don't think he's an escaped crook or anything of the sort. Even if he were, I'd not be interested. This is my vacation."
"Oh, all right," laughed Penny. "I was just thinking aloud."
Mr. Nichols opened the door and they walked toward the car together. Suddenly Penny halted, staring toward the rumble seat.
"Why, Dad!" she exclaimed. "Walter Crocker has gone!"