简介：Whiletakingawalk,PeterChapmanandhiswife,Sarah,arefollowedbytwobunglingspies,DexterandLewis,whofinditdifficulttotakephotosoftheirquarry.Peter,anElectronicsProfessoratthelocalPolytechnic,isthensuddenlysackedfromhisseeminglysecurejobwithoutwarning-andwithnoreasonableexplanationbeinggivenforthisdecision.TakentoMI5,heismadeanofferhecan'trefuse-ajoboffer!…