good! Top-caliber genius!â
âBut who sent these to us?â insisted Josh. âIf it wasnât you.â
âWell, why would it be me, you twaddlehead?â Petty said. âWhy would I exclude you from a brand-new, exciting S.W.I.T.C.H. phase? And then send you vital parts of it anonymously? You and Danny are my assistants. I need your help. And when the S.W.I.T.C.H. formulas are all finally perfected, you will join me on the worldâs stage as the assistants of the GREATEST GENIUS SCIENTIST IN THE HISTORY OF MANKIND!!!â This last she said as an echoing shout, rising to her feet and raising her chocolatey hands as if she were already on a stage being cheered bythousands of other, less clever scientists.
âSheâs so modest,â muttered Danny.
âHmmm â¦â Petty sank back down onto her kitchen chair and cut herself a second slice of cake. âDid this Mystery Marble Sender include a note with the other marbles?â
âYesâa note always comes first,â Josh said. âWith a clue to find the next marble.â He put several bits of paper with spiky handwriting on them into Pettyâs hand. âSo far weâve found one marble in a barn owlâs nest, one up in a light in the school hall, and oneâlast weekâin a ruined sea fort.â
âWhoever it is,â Danny said, âtheyâre spying on us and following us around. They even followed us on holiday!â
âOr they were following
me
,â Petty said, scanning the notes. âRemember I was at your holiday beach too. Far more likely, itâs all about meâ¦â
âEven though they were all addressed to us?â snorted Josh.
âThatâs just to throw me off the scent,â murmured Petty. âItâs all about me.â
âSo modest,â muttered Danny.
âIâm going to have to pack up my lab and go even sooner than I thought,â Petty said, slapping the notes down on the table. âFirst, the attempted break-inânow notes to you which are clearly meant for ME! Itâs getting more dangerous here by the minute!â
âButâwhere will you go?â asked Josh, appalled. âAnd ⦠what about the rest of theREPTOSWITCH project. You were going to S.W.I.T.C.H. us into snakes andâandââ
âAlligators!â continued Danny, forlornly biting into his second slice of cake. âFwee fwant koo be falligators!â
âDonât talk with your mouth full,â chided Petty. âAnd donât be so selfish! Canât you see? Theyâre closing in! If my lab gets discovered, Iâll be kidnapped and tortured for all my secrets! And so, very possibly, will you! I donât think itâs safe for you to come around here and see me anymore.â
âWhat?â Danny stood up. âAfter all weâve done for you! Youâre just going to chuck us off the S.W.I.T.C.H. Project?â
âDonât be so melodramatic, Danny!â Petty stood up too. âI mean, I think youâll have to meet me somewhere else ⦠in my new secret lab!â
âYour new lab? Is it ready?â Josh asked.
âVery nearly,â Petty said. âIn fact ⦠I will let you see it tomorrow. Take this.â She dug into her other pocket and then handed Josh a small, white spray bottle with a big
G
written on it in marker. âIt will allow you to find your way in. Do NOTuse it before you reach the new address. JoshâIâm trusting you not to let Danny persuade you before then.â
âHey!â Danny said, looking wounded.
âOnly when you get there!â went on Petty. âOr I wonât trust you again. And make sure youâre not followed.â
Josh grabbed the S.W.I.T.C.H. spray bottle. A surge of deep excitement ran through him. âWhich S.W.I.T.C.H. is it?â he breathed.
âYouâll find out soon enough,â Petty said.
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