"Yes; the other was blown off by the explosion of a hand grenade which a Pinkerton detective threw into the house some years ago in an attack upon her sons. There was a younger son of hers killed by the same bomb."
Mrs. Samuels was suspiciously and curiously eying the Terror as it rolled toward her.
Then she suddenly disappeared in the house.
Her action struck Jack as being very significant.
"Did you see that!" he asked the sheriff.
"Yes. She's a queer, violent tempered woman,"
"Perhaps she has gone in to warn her sons of our coming."
"By thunder, you may be right."
"We'd better search that house, Timberlake."
"I intend to do so."