JamesPurefoystarsasWilliamTravers,acriminalbarristerwhoisrecoveringfromatraumaticseriesofeventsthathaveshakenhisbeliefinthelegalsystem.　　Onthesurface,Traversisapictureofsuccess;anaccomplishedcriminalbarristerhappilylivingwithhiswife(playedbyDervlaKirwan)inruralSuffolk.　　However,TraversisstillrecoveringfromeventsinhispastwhenheisdrawnintoacasethatinvolveshisoldfriendMartinNewall(NathanielParker),whofacesconspiracyandmurderchargeswhileatthesametimebeinginvestigatedbyaviciousandvengefuldetectiveDSMarkWenborn(CreedMiles).　　Thefive-partseriesfromacclaimedwriterAnthonyHorowitz(Collision,Foyle'sWar)isastoryoffriendship,conspiracy,betrayalandmurderaswellasacriticallookatthewaythelegalsystemoperates.