"You see, Penny," Zizi summed up, "a criminal always slips up on some minor count. If the Tracy person hadn't oiled his door and the door of that haunted room so carefully, or if he'd had the wit to oil some other doors too, we might have overlooked him as a possible suspect, eh?" "I don't think so, Ziz." "Neither do I, Penny Wise." * * * * * * Transcriber's note: Obvious typographical errors were corrected without note. Non-standard spellings and dialect were left unchanged.