Suddenly the front door, which is operated by electronic intercom, opened. We both fell in, him on top of me. I screamed again, and he slapped his hand over my mouth. "Shut up," he growled, "and just get on with it." An explosion of shouting burst out from the top of the stairs. My father had seen what was happening as he let me in on the video intercom, and had rushed to stop the attack, calling out for my brother to help him. I was lucky - my attacker decided I wasn't worth the fight, and turned his energies to making a speedy getaway.