“Is there but one door out of this room?”

“No, there is a small door beside that bookcase.”

“Where does it lead to?”

“It leads to a passageway at the end of which there is a stair down into the vestry.”

Muller gave an exclamation of surprise.

“The vestry as well as the church have neither of them been opened on the side toward the street.”

“The church or the vestry, you mean,” corrected Muller. “How many doors have they on the street side?”

“One each.”

“The locks on these doors were in good condition?”

“Yes, they were untouched.”