"Marden says that he was half up from his seat when something struck
him on the back of the head with fearful force. He remembered
nothing more until he awoke, with the dawn creeping into the room,
and heard West groaning somewhere beside him. They both had badly
damaged skulls with great bruises behind the ear. It is instructive
to note that their wounds corresponded almost to a fraction of an
inch. They had been stunned by someone who thoroughly understood
his business, and with some heavy, blunt weapon. A few minutes
later came the man to relieve the constable; and the constable was
found to have been treated in exactly the same way!"
"But if Marden's account is true - "
"West, as he lost consciousness, saw Marden go in exactly the same
way.
"Marden was seated by the open window, but I cannot conjecture how
any one can have got at West, who sat by the table!"
"The case of Marden is little less remarkable; he was some distance
from the window. No one could possibly have reached him from
outside."
"And the constable?"
"The constable can give us no clue. He was suddenly struck down,
as the others were. I examined the safe, of course, but didn't
touch it, according to instructions. Someone had been at work on
the lock, but it had defied their efforts. I'm fully expecting
though that they'll be back to-night, with different tools!"
"The place is watched during the day, of course?"
"Of course. But it's unlikely that anything will be attempted in
daylight. Tonight I am going down myself."
"Could you arrange that I join you?"
"I could, but you can see the danger for yourself?"
"It is extraordinarily mysterious."
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