A bit later

Their car pulls up outside of the Science Center. Simon throws open his car door and runs to the building. Simon's parents get out slowly. "He sure is excited," his dad says.
Simon stops at the doors to the center, "You coming?" His mom laughs, "Yeah. You can go in, we'll catch up.
Simon goes into the building and looks around. Everything is really clean and white. He looks at sings trying to find the way to his dog. Simon spots a restricted sign. If Hank is here, that's  where he'd be, Simon thinks.
He waits for everyone to pass, and when no one is look, walks right through the door. Now he stands in a long hallway, doors on each side. Simon sneaks down the hall, picking his head up now and then to see into the windows on the doors.
He sees a break room, storage area, closet, but no creepy lab. Simon reaches the end of the hallway. One door stands in front of him, this one has no window.
He tries the door but it turns out it's locked. Simon takes off his backpack and rummages until he find a bobby-pin. He puts the pin and the door and twists until he heard the little click.
Simon slowly pushes open the door. There, in the middle of the room, is a dog crate. In the crate is Hank, sleepy soundly.
"Hank!" Simon whisper-shouts.
Hank stirs and looks up at his friend. "Simon! You found me! Now come free me from this cage boy." Simon runs over and unlocks it with his trusty bobby-pin.
"This is kinda like the old days, huh? Back the shelter when I recused you the first time?" Simon says.
Hank struts our of the dog crate, "I lead a daring life." Simon laughs.
Then the two hear voices, angry voices, coming down the hall to them.