Horror of Horrors!

You slam down the lid of the suitcase, grab it by the handle, and race out the door. You can hear MagnifiCAT shouting threats behind you.
In the corridor you feel the weird thing in your stomach again. You spot a door with and EXIT sign over it. It wasn't there a moment ago. But right now, that doesn't really matter. You push it open and run outside.
You give a big sigh of relief. You know this street.
Will peeps out from behind a parked van. "Over here," he calls. "What's that?" he asks, pointing to the suitcase.
You hold it up. "The puppy's inside," you explain.
"You stole MagnifiCAT's dog? And suitcase?"
Will stares at you.
"I rescued the dog," you counter. "And we can leave the suitcase."
"Uh-oh. We are in major trouble!" Will points at the suitcase.
On the side, in glowing letters, is the message MAGNIFICAT'S BAG OF TRICKS. DO NOT OPEN! DANGER!!!
You stare at the warning. Whoa, this is getting confusing. You shake your head to clear your brain. You reach for the latches. "I'd better let Ralph out."
"Don't do that!" Will exclaims. "Can't you read? It says 'Danger.'" He shoves his hands into his pockets and shivers. "I just want to go home."