“Dr. Seven,” I whispered down the corridor. We had nearly finished packing up our research, but the electric torches had found the Underground. Dennys Seven’s sandy hair appeared from around the corner.
“I know.” His eyes said. With his finger to his lips, he crept to the passageway and beckoned me to him.
“How long do you think we have?” Dr. Seven asked in a hushed tone.
“Depends on how long it takes them to get through the door,” I smiled confidently. “And the traps.” He whistled quietly.
“Cora and Train have already gone through; they have the samples.” With those words, we stepped into the passageway.
The banging and the tearing was deafening; it was proof that Train’s expertise had come in handy. But it wouldn’t hold them forever.