hair.â Joe stopped for a moment to think back. âMedium build,â he continued, âa few inches less than six feet tall, maybe.â
âThis person didnât speak?â the policeman asked.
âNo,â Joe said, shaking his head. âHave you had a chance to look around?â he asked Jax. âIs anything missing?â
âNot that Iâve discovered,â Jax said.
âI found something,â Frank said. He reached inside the envelope, pulled out the lumpy piece of tissue, and peeled back the ends of the paper to reveal the small piece of pewter.
âIt could be a piece of jewelry or an ornament of some kind,â the policeman suggested. Frank refolded the package and put it back in the envelope. Then he handed it to the officer.
Frank, Joe, Jax, and the policeman made another quick tour of the flat but found nothing else. âLet me know if you discover anything missing or find anything suspicious,â the policeman told Jax, handing him a card with a telephone number.
After the officer left, the Hardys helped Jax make one more security check around the second floor. They checked all door and window locks.
When the Hardys finally hit the beds in Jaxâs guest room, it was two oâclock in the morning. Frank was still wired from the dayâs excitement. âLooks like this is going to be a working vacation,â he said to Joe.
âAre you talking about the fire at the Tower or the break-in here?â Joe asked.
âThe break-in,â Frank said. âIt looks like the fire couldâve been an accident. Iâm not sure why anyone would burn the exhibit. But I can see why someone might rob Jax, canât you?â
âYouâre talking about the Molar Mike, right?â Joe guessed.
âYou got it,â Frank answered. âThat thingâs rigged so people can get messages from a computer or a cell phone. It opens up all sorts of possibilities.â
âUh huh,â Joe agreed. âFor good and bad. Ifsomeone can program a computer to communicate with a tooth receiverââ
âSomeone else can hack in and change the program,â Frank said, finishing his brotherâs sentence.
âExactly.â
âThat pewter piece might help us,â Frank pointed out. âI took a photo of it before the policeman got here.â
Joe heard the rhythmic breathing that told him his brother was falling asleep.
Joe turned over and tried to get his mind to shut down. As he finally felt sleep coming on, a peculiar sound reached his ears.
Joe fought back the drowsiness and turned on his back. Skrrrrt. Skrrrrt. The odd sound drifted through the air again. Itâs like a scraping noise, Joe thought. And itâs coming from up there. He looked at the ceiling. When he heard the sound again, he reached over and punched Frankâs bed.
âWake up,â he whispered. âFrank! Wake up.â
âMmmmmmm, this better be good. Whatâs up?â
âListen,â Joe whispered.
Frank sat up and shook his head.
The Hardys sat still. Joe strained to hear the sound again, but there was nothing. Then, as he turned to swing his legs out from under the blankets, he heard a thump on the ceiling.
âWhoa,â Frank said. âThereâs something up on the third floor.â
âI heard a scraping sound earlier,â Joe said, his voice low. He pulled sneakers on as he talked. âThereâs definitely something moving around up there.â
âThatâs supposed to be an unoccupied flat,â Frank reminded his brother. âJax told us that he and the other shopkeeper in this building use it for storage since thereâs no one living there. Maybe itâs the jeweler, checking some of his stuff.â
âAt this hour?â Joe wondered. âMaybe. If itâs not him, though, whoâor whatâcould it be?â Joe asked.
âCould be just a rat or a mouse,â Frank