maybe Fiona had somehow bought Dr. Underbergâs diary for my dad, like maybe she thought heâd like some extra information on him.â
âSo?â Savannah asked.
âWell, what if itâs exactly the opposite? What if she needs some extra information about Underbergâsomething thatâs not in the diaryâand she thinks my dad still has it?â
âAnd sheâs dating him to sweet-talk him into giving it to her?â Eric had definitely dropped the sarcasm.
âOr to get close enough to him so she could get into his office and see what he had left.â
My brother nodded slowly. âThat would explain what she sees in him, at least.â
âAll her files were named Omega,â I said. âWhatever sheâs looking for, itâs called Omega.â
âYou could look under O?â Savannah suggested.
Eric snorted. âDadâs system doesnât work like that. Weâd need to know what Omega means to Dad.â
âOr what it meant to Underberg.â I closed up the filing cabinet and grabbed a copy of Dadâs Underberg book off the shelf. We have loads of copies lying around, ever since the publisher stopped selling them. I turned to the index, looking for any mention of âOmega.â
âNothing in the book,â I said. âWhat does Omega even mean?â
âI think itâs a Greek letter,â said Savannah. âMy cousin is a Chi Omega at college. Sororities all have Greek-letter names.â
âSo maybe Underberg was in a fraternity called Omega?â I asked.
âIt also means âlast,ââ Eric pointed out. âLike The Omega Man is a zombie movie about the last human on Earth. And a lot of final bosses in video games are Omega this or Omega that.â
Savannah was already paging through Dadâs dictionary to O. âWeâre both right. Itâs the last letter in the Greek alphabet, so sometimes people use it to mean âlastâ or âend.ââ
âG for Greek?â Eric asked me, turning back to the filing cabinet. âF for foreign languages?â
I smiled at him. Finally, heâd seen the light. I pulled open a drawer. âLetâs try L for Last.â But there was no file marked âLastâ in the drawer. Just one marked âLoose Pages.â I lifted it out and opened the waterproof bag, making sure to press my finger over the hair seal to keep it from slipping out.
The file was pretty thick, with all kinds of paper scrapsâwhat looked like everything from old grocery lists to a few notes scrawled on the backs of receipts. A small, yellowed page of lined paper caught my eye and I yanked it out of the stack.
The size and shape matched the scans from Fionaâs computer. The edge was ragged, as if it had been torn from a notebook. The handwriting was Aloysius Underbergâs.
I clutched the page to my chest and ran back to the living room with Paper Clipâwho knew quite well never to enter Dadâs officeâhot on my heels from the second I hit the hall. The printouts of Fionaâs files were still sitting on the coffee table and I lined the loose page up against the torn edges on the final printout, the one marked âOmega-AU-pg127.â
It was a perfect match.
I heard Savannah and Eric behind me.
âThis is what sheâs looking for,â I whispered, holding up the matching pages. âItâs the missing last page of Underbergâs diary. It must have fallen out and gotten lostwith Dadâs stuff before the rest of the diary was stolen.â I dropped back on the couch.
âSo Omega means the last page of Dr. Underbergâs diary?â Savannah asked.
âI guess.â
âWait, no,â said Eric. âThat doesnât make sense. All Fionaâs files are named Omega, not just the one for this page.â
âTrue.â So if she wasnât looking for this one piece of paper, what