Mary Burckhardt was sitting upright in bed with the terrified, uncomprehending stare of someone just waking out of a nightmare.
"Oh!" she gasped, as her husband came in the room. "Darling, I just had the most terrible dream! It was like an explosion and—"
"Again?" Burckhardt asked, not very sympathetically. "Mary, something's funny! I knew there was something wrong all day yesterday and—"
He went on to tell her about the copper box that was the cellar, and the odd mock-up someone had made of his boat. Mary looked astonished, then alarmed, then placatory and uneasy.
She said, "Dear, are you sure? Because I was cleaning that old trunk out just last week and I didn't notice anything."
"Positive!" said Guy Burckhardt. "I dragged it over to the wall to step on it to put a new fuse in after we blew the lights out and—"
"After we what?" Mary was looking more than merely alarmed.
"After we blew the lights out. You know, when the switch at the head of the stairs stuck. I went down to the cellar and—"
Mary sat up in bed. "Guy, the switch didn't stick. I turned out the lights myself last night."
Burckhardt glared at his wife. "Now I know you didn't! Come here and take a look!"