Jessie. âThere arenât colored lights anywhere else in the house. That light was weird. It seemed almost like a warning light.â
âA warning about what?â asked Benny.
âI donât know,â Jessie answered. âA warning not to enter that room, I guess.â
âMaybe thatâs her office,â Violet suggested. âShe did say she had work to do and didnât want to be bothered.â
âBut have you ever seen an office with a warning light outside?â Jessie asked.
âIt is a little unusual,â Henry agreed. âBut it wouldnât be the first unusual thing weâve found here.â
The others went back to shelving books, but Jessie just stood there, lost in thought.
It was close to dinnertime when the Aldens finished with the library. They stood back to admire the shelves and shelves of neatly arranged books.
âLooks great,â said Henry, âif I do say so myself.â
The children left the stepstool in the library and let themselves out, as Mrs. Blackwell had instructed. The house was dark and silent. Henry pulled the front door shut behind them.
As they walked down the driveway, the Aldens noticed a man standing near the street. He had brown hair and was wearing a brown leather jacket. He was staring at the Blackwellsâ house as if deep in thought.
âHello,â called Henry. âMay we help you?â
The man seemed startled to see the Aldens. He looked at them without saying a word, then began walking quickly down the street toward a car parked at the curb.
The Aldens reached the end of the driveway. âIs there anything ââ Henry called out, but the man was already in his car, closing the door. A moment later, he had driven away.
âThat was strange,â said Henry, looking up the street in the direction the car had gone. âHe hurried away the minute he saw us.â
âWithout even saying hello,â Violet added.
âHe seemed very interested in the Blackwellsâ house,â Jessie said.
âAnd you know whatâs even stranger?â Benny said. âThat was the same man we saw at lunchtime, the one who was watching us from his car.â
âAre you sure?â Violet asked.
âYes,â said Benny. âSPIDER2.â
CHAPTER 4
Lights at Night
O ver dinner that night, the children told Grandfather all about the mysterious Blackwells and the mystery man. When they reached the end of their story, Benny started to giggle.
âWhatâs so funny?â Jessie wanted to know.
âThe Blackwells are spies,â said Benny. âAnd now someoneâs spying on them!â
âI canât help wondering if that man has anything to do with what Mrs. Blackwell said on the phone,â said Jessie. âCould he be the one Mrs. Blackwell is tracking?â
âWe donât know for sure that Mrs. Blackwell is tracking someone,â Violet pointed out.
âViolet is right,â Grandfather agreed. âMrs. Blackwellâs phone call does sound surprising, but Iâm sure thereâs a simple explanation.â
âReally?â Benny asked. âLike what?â
Grandfather thought for a moment. âIâm not sure,â he admitted. âBut I wouldnât worry about it. Hearing one side of a telephone conversation always sounds odd.â
The Aldens finished their dinner, then Henry and Violet cleared the table and Jessie and Benny washed the dishes. When the kitchen was clean, the children joined Grandfather in the living room. They played checkers and read books until it was time for bed. Saying good night, they each headed into their own rooms.
Henry walked over to the windows in his room to pull down his shades when something outside caught his eye. From the window next to his bed, Henry could see the side of the Blackwellsâ house. Because Henryâs bedroom was on the second floor, he could see over the tall stone wall