The Thinking Machine, on his knees, examined the bottom of one of the doors, that which led into the hall. The lock of this door had been broken when employees burst into the room. Having satisfied himself here and at the bottom of the other door, which connected with the bedroom adjoining, The Thinking Machine again climbed on a chair and examined the doors at the top.
"Both transoms closed, I suppose?" he asked. "Yes," was the reply. "You can't make anything but suicide out of it," explained the detective. "The Medical Examiner has given that as his opinion--and everything I find indicates it."
"All right," broke in The Thinking Machine abruptly. "Don't let us keep you."
After awhile Detective Mallory went away. Hatch and the scientist went down to the office floor, where they saw the manager. He seemed to be greatly distressed, but was willing to do anything he could in the matter.
"Is your night engineer perfectly trustworthy?" asked The Thinking Machine.
"Perfectly," was the reply. "One of the best and most reliable men I ever met. Alert and wide-awake."
"Can I see him a moment? The night man, I mean?"
"Certainly," was the reply. "He's downstairs. He sleeps there. He's probably up by this time. He sleeps usually till one o'clock in the daytime, being up all night."
"Do you supply gas for your tenants?"
"Both gas and electricity are included in the rent of the suites. Tenants may use one or both."