decide has happened. Do you know whether your brother-in-law has any
practical knowledge of electricity, Mr. Hollyer?"

"I cannot say. He was so reserved, and we really knew so little of
him--"

"Yet in 1896 an Austin Creake contributed an article on 'Alternating
Currents' to the American _Scientific World_. That would argue a
fairly intimate acquaintanceship."

"But do you mean that he is going to direct a flash of lightning?"

"Only into the minds of the doctor who conducts the post-mortem, and
the coroner. This storm, the opportunity for which he has been waiting
for weeks, is merely the cloak to his act. The weapon which he has
planned to use--scarcely less powerful than lightning but much more
tractable--is the high voltage current of electricity that flows along
the tram wire at his gate."

"Oh!" exclaimed Lieutenant Hollyer, as the sudden revelation struck
him.

"Some time between eleven o'clock to-night--about the hour when your
sister goes to bed--and one thirty in the morning--the time up to
which he can rely on the current--Creake will throw a stone up at the
balcony window. Most of his preparation has long been made; it only
remains for him to connect up a short length to the window handle and
a longer one at the other end to tap the live wire. That done, he will
wake his wife in the way I have said. The moment she moves the catch
of the window--and he has carefully filed its parts to ensure perfect