ThereaderhaslongsinceunderstoodthatDonaldBeanLeanplayedthepartoftempteronthisoccasion。Hismotiveswereshortlythese。Ofanactiveandintriguingspirit，hehadbeenlongemployedasasubalternagentandspybythoseintheconfidenceoftheChevalier，toanextentbeyondwhatwassuspectedevenbyFergusMac-Ivor，whom，thoughobligedtohimforprotection，heregardedwithfearanddislike。Tosuccessinthispoliticaldepartment，henaturallylookedforraisinghimselfbysomeboldstrokeabovehispresenthazardousandprecariousstateofrapine。HewasparticularlyemployedinlearningthestrengthoftheregimentsinScotland，thecharacteroftheofficers，etc。，andhadlonghadhiseyeuponWaverley’stroop，asopentotemptation。DonaldevenbelievedthatWaverleyhimselfwasatbottomintheStuartinterest，whichseemedconfirmedbyhislongvisittotheJacobiteBaronofBradwardine。When，therefore，hecametohiscavewithoneofGlennaquoich’sattendants，therobber，whocouldneverappreciatehisrealmotive，whichwasmerecuriosity，wassosanguineastohopethathisowntalentsweretobeemployedinsomeintrigueofconsequence，undertheauspicesofthiswealthyyoungEnglishman。NorwasheundeceivedbyWaverley’sneglectingallhintsandopeningsforanexplanation。
Hisconductpassedforprudentreserve，andsomewhatpiquedDonaldBean，who，supposinghimselfleftoutofasecretwhereconfidencepromisedtobeadvantageous，determinedtohavehisshareinthedrama，whetheraregularpartwereassignedhimornot。Forthispurpose，duringWaverley’ssleep，possessedhimselfofhisseal，asatokentobeusedtoanyofthetrooperswhomhemightdiscovertobepossessedofthecaptain’sconfidence。HisfirstjourneytoDundee，thetownwheretheregimentwasquartered，undeceivedhiminhisoriginalsupposition，butopenedtohimanewfieldofaction。
HeknewtherewouldbenoservicesowellrewardedbythefriendsoftheChevalier，asseducingapartoftheregulararmytohisstandard。Forthispurpose，heopenedthemachinationswithwhichthereaderisalreadyacquainted，andwhichformacluetoalltheintricaciesandobscuritiesofthenarrativeprevioustoWaverley’sleavingGlennaquoich。
ByColonelTalbot’sadvice，Waverleydeclineddetaininginhisservicetheladwhoseevidencehadthrownadditionallightontheseintrigues。Herepresentedtohimthatitwouldbedoingthemananinjurytoengagehiminadesperateundertaking，andthat，whatevershouldhappen，hisevidencewouldgosomelength，atleast，inexplainingthecircumstancesunderwhichWaverleyhimselfhadembarkedinit。Waverleythereforewroteashortstatementofwhathadhappened，tohisuncleandhisfather，cautioningthem，however，inthepresentcircumstances，nottoattempttoanswerhisletter。TalbotthengavetheyoungmanalettertothecommanderofoneoftheEnglishvesselsofwarcruisinginthefirth，requestinghimtoputthebearerashoreatBerwick，withapasstoproceedtoshire。Hewasthenfurnishedwithmoneytomakeanexpeditiousjourney，anddirectedtogetonboardtheshipbymeansofbribingafishing-boat，which，astheyafterwardslearned，heeasilyeffected。
TiredoftheattendanceofCallumBeg，who，hethought，hadsomedispositiontoactasaspyonhismotions，Waverleyhiredasaservant，asimpleEdinburghswain，whohadmountedthewhitecockadeinafitofspleenandjealousy，becauseJennyJophaddancedawholenightwithCorporalBullockoftheFusileers。