That night, a thunderstorm blew through Green Lawn. While Dink slept, lightning flashed and thunder boomed outside his bedroom window.

Dink had a nightmare. He was trapped in the tomb again. This time he was alone.

One by one, the two mummies leaning against the wall opened their eyes. One by one, they stepped out of their coffins and shuffled toward him.

They passed the child’s coffin. Its lid stayed shut, the child’s mask staring up at the ceiling.

Because the mummy’s not in there, Dink thought. But then why—

Just then Dink felt a cold hand on his shoulder. He tried to run, but his legs wouldn’t budge. The mummies’ cloth wrappings had come loose and were encircling his body, like tentacles.

Dink bolted awake with a yell, tangled in his sheet. When he realized that he was in his bed and not the tomb, he lay back down.

He tried to go back to sleep, but something kept him awake. It was something in his nightmare, in the tomb. What was it?

He lay there trying to picture the tomb again. Before the bomb went off, all three sarcophagus lids had been open. The small sarcophagus was empty because the mummy was still in Dr. Tweed’s office.

But after the blast, the smallest coffin—the one for the child—was closed.

Then Dink remembered the robbers dragging those two heavy bags of gold. He smiled, closed his eyes, and went back to sleep.

After breakfast, Dink called Josh. He came over, and they walked next door to Ruth Rose’s house. She was sitting on her front steps with a plate of toast on her knees.

Dink sat on the bottom step. “I figured it out last night,” he told them. “I know where the crooks hid the gold.”

Josh reached for a piece of Ruth Rose’s toast, but she slapped his hand.

“Don’t you know it’s nice to share?” he asked.

“Don’t you know it’s nice to ask first?” Ruth Rose said. But she passed Josh a section of her toast. “Tell us, Dink.”

“I had an awful dream last night,” Dink said. “I was trapped in the tomb. The two big coffins were open, and the mummies were chasing me. But the little coffin, the one for the kid, was closed.”

He looked at Josh and Ruth Rose. “After I woke up, I remembered something. When we were in the tomb just before we got locked in, the little coffin was open. Remember? But when we went back into the tomb after the bomb went off, the coffin lid was closed!”

“I don’t get it,” Josh said, licking jam from his fingers.

“You will in a minute,” Dink said. “I couldn’t get back to sleep last night, so I started wondering: Who closed that little coffin? Then it hit me. If the robbers didn’t have a car waiting, and if the gold was too heavy to carry far, maybe they hid it there!”

“Then the crook has to be someone who can get back into the tomb later and get the gold,” Josh said.

“DR. TWEED!” Ruth Rose yelled.

“That’s what I think, too,” Dink said. “Aunt Freda said Dr. Tweed was a good customer. I figure he and the woman with the short dark hair planned it together.”

“She had that gym bag,” Ruth Rose said. “And all she had to do was walk across the street.”

“And she smelled like a walking French fry!” Josh added.

“But which one hid the bomb?” Ruth Rose asked.

“Dr. Tweed, I think,” Dink said. “Remember how he stayed in the tomb for a few minutes after we all left?”

“But why did the woman grab the mummy?” asked Josh.

“To get us out of there,” Dink said. “Dr. Tweed had to be alone in the tomb so he could plant the bomb.”

Dink grinned at Josh and Ruth Rose. “And that left the sarcophagus empty for the gold!” he said.

“OH MY GOSH!” Ruth Rose yelled. “Dr. Tweed told us he wouldn’t be at Wet Wednesday today. I’ll bet he’s gonna take the gold and leave!”

She jumped up and ran into the house. Dink and Josh were right behind her.

Ruth Rose called the police station and asked for Officer Fallon.