▁the ▁Germ ans ▁to ▁a ▁significant ▁concentration ▁of ▁Al lied ▁sub mar ines ▁in ▁the ▁Mediter rane an ▁and ▁thus ▁di vert ▁attention ▁from ▁Norm andy . ▁After ▁an ▁event ful ▁arrival ▁on ▁the ▁rock , ▁they ▁join ▁the ▁base ▁controlled ▁by ▁the ▁Colonel ▁Long re ach , ▁whose ▁order ▁is ▁L t . ▁Br andon ▁Clar ke , ▁tw in ▁brother ▁of ▁Har vey ▁Clar ke . ▁The ▁tags ▁work ▁perfectly , ▁but ▁Bla ke ▁and ▁Mort imer ▁find ▁a ▁sp y ▁within ▁the ▁base ▁attempts ▁to ▁reve al ▁the ▁de ception ▁to ▁the ▁It ali ans . ▁After ▁a ▁brief ▁investigation ▁during ▁which ▁Bla ke ▁rec alls ▁several ▁strange ▁events ▁that ▁occurred ▁in ▁London ▁and ▁B let ch ley ▁Park , ▁his ▁susp ic ions ▁fall ▁on ▁Br andon ▁Clar ke . ▁Mort imer ▁and ▁ser ge ant ▁D uff el ton , ▁he ▁confront s ▁Clar ke ▁who ▁tried ▁to ▁fle e . ▁Mort imer ▁real izes ▁that ▁he ▁and ▁his ▁brother ▁Har vey ▁communicate ▁via ▁the ▁packages ▁they ▁send ▁through ▁an ▁encryption ▁system ▁d ating ▁back ▁to ▁ancient ▁Greece , ▁sc yt ale ▁or ▁stick ▁Pl ut arch . ▁Br andon ▁conf esses ▁his ▁bet ray al ▁before ▁comm itting ▁suic ide ▁with ▁a ▁cy an ide ▁caps ule ▁present ▁in ▁his ▁j aw . ▁In ▁London , ▁Major ▁B enson , ▁feeling ▁dis g rac ed , ▁confront s ▁his ▁brother ▁Har vey ▁k ills ▁before ▁fle eing ▁with ▁Ol rik . ▁The ▁latter ▁sh ade ▁without ▁em