Barrister only exhales when they rematerialize in the darkened Louvre. “Made it,” he sighs. “And got rid of the Extinctioners at last!”

“They won’t be slipstreaming again,” agrees Verla, checking around for guards. “I just hope we didn’t alter the timeline much.”

Barrister shrugs and sits down to undo the latches on his jet boots. “It wasn’t a designated Flux Period,” he says. “Surely Chronastromy HQ would have informed us–”

“We have to go back,” says Mario hoarsely. “We have to go back now.”

“What?” says Verla.

But Mario just points one trembling finger at Mona Lisa’s bloody, sharp-fanged grin.