Quantum's clock announced the time and they disembarked. But they had company. Their other selves hopped from Motor Unit One and no-one looked pleased. Except for the other Skratch, who purred and waved and made a general fuss. Skratch thought it unwise to wave back. His claws extended, his fur bristled. From deep in his throat a growl emerged. Mist swirled around Motor Unit One. "State your business, imposters." "You're delayed," said the Wabbit. He activated his mechanical hand and gave a carefree wave. "Crew of Motor Unit One. This is the day before yesterday, so please try to catch up." Lapinette's voice was an urgent whisper. "Don't touch them." "That's an awful frock," said the other Lapinette suddenly. The Wabbit flinched. Wabsworth stepped back. Lapinette stroked her edged weapon - enough to draw blood - and then she hissed. "Your frock has seen better days." "Mine's original," snapped the other Lapinette. A stare off lasted some time. "Motor Unit One, you have to go back," announced Wabsworth suddenly. His opposite number nodded. "He's right. We're entangled, Commander." "So why don't they go back?" came their Commander's reply. Motor Unit One's klaxon blasted. Mist rose from his wheels. "This is the work of the Fifth Force." "We'll join forces and work together," suggested the Wabbit. "Then who's in charge?" asked Skratch. "Me," said both Wabbits ...