Shortly after, Dalrymple disappears and the Hardys, fearing for their lives, go to the Purdy place to look for him. Then the Hardys are held up by a man named Arthur Jensen, looking similar to Dalrymple, living in his house secretly in hiding. Jensen was a thief who stole small, but valuable things from ships and such. Frank and Joe are bound and gagged, along with an inventor named Amos Wandy, with a time bomb set to go off at 3 a.m. With less than two minutes remaining, a window panel breaks and Chet Morton emerges and unbinds Frank, who then defuse the bomb just seconds before it was supposed to go off. Joe and Wandy are unbound next. Then Jensen is later caught on the Purdy mansion grounds and the valuables are retrieved. Another discovery proves that the death threats to Raymond Dalyrmple are lowered down through the chimney in the jaws of one of Amos Wandy's inventions, which rolls to the middle of the hidden room, then drops the note and is raised up by a wire.