they were not lined up neatly anymore. Three cookbooks lay on their sides, and Raston was bent over a fourth, open to a page titled âDelicious and DecadentâDesserts to Die For!â Crisscrossing the page were small, smudged pawprints the color of bacon grease.
Emmy groaned aloud. âGet in the backpack , Ratty!â
The Rat looked up, his paw resting on a line of type. âCan I take this cookbook with me?â
âNo!â
âJust this page, then?â he begged. âLook! âWhip until frothyâ! âWhisk in vanilla sugarâ!â
âCrikey,â said Joe, coming up behind and looking over Emmyâs shoulder. âIs that rat drool on the page?â
â GetâinâwithâSissy! â Emmy pushed the protesting rodent through the backpack opening.
âLemon zest!â cried the Rat in ecstasy. âAlmond paste! Italian chocolate , Emmy! Oh, I never knew, I never knew!â
Emmy zipped the pack closed over his head, jammed the cookbooks back on the shelf, and turned just as her mother entered the kitchen.
âMom? Is it okay if I go with Joe to the Antique Rat? The professor needs us to help him with something. One of his experiments, I guess.â
Mrs. Addison nodded slowly. âIf itâs to help the professor, you may go. But are you sure your room is clean, this time?â
âIâm positive ,â said Emmy.
4
âP ROFESSOR CAPYBARA ?â Emmy pushed open the door of the Antique Rat, and a bell jingled faintly as she stepped into the dim interior. She looked past the marble-topped tables and carved wooden cabinets to the far side of the store, where two figures hunched over a burning flame.
âIs that Emmy?â The shorterâand fatterâof the two turned, revealing a beaming face above a white beard. âAre Cecila and Raston with you?â
âRight here,â Emmy said, unzipping the top of her backpack.
âI came, too, Professor,â said Joe, clumping after Emmy to the improvised laboratory, a counter full of beakers and microscopes and stacks of yellowing paper.
The taller, lankier figure straightened, resolving itself into Brian, the professorâs teenage assistant. âThere are two of them, Professorâdo you still need me?â
Professor Capybara flapped his hands at his assistant, waving him away. âYou go on, Brian. Emmy and Joe will help me.â
Brian ruffled Emmyâs hair, gave Joe a thump on the back, grabbed a bag off a chair, and strode out the back door.
âWhereâs he going?â asked Emmy, as a sudden grinding roar told her Brian had started the ancient old truck he used for deliveries. She laid her backpack carefully on the counter, and Raston poked his nose out of the opening.
âBrianâs gone to the Childrenâs Home,â said the professor absently, turning down the flame beneath a triangular glass flask, half full of a bubbling golden liquid. âHe visits there every week, brings treats and suchâall right, Cecilia, are you ready?â
Cecilia followed her brother onto the counter and smoothed her rumpled whiskers. âReady, sir.â
Professor Capybara consulted a piece of paper with a scrawled formula. Then he inserted an eyedropper into a test tube and squeezed the rubber bulb.
âWhatâs in the test tube?â Emmy crowded in close to see.
âSome people,â said the professor, âmight call it a catalyst. But this is something a little more specialâa ratalyst .â
âBut what does it do?â asked Joe.
âIt helps to store Sissyâs kisses.â Professor Capybara squeezed the eyedropper over the flask. Three silver drops glistened and fell, swirling into the golden liquid and turning it a deep orange.
âI donât get it,â said Emmy.
The professor, red-faced from bending over the hot Bunsen burner, wiped his forehead. âWell, Rastonâs bites have some