SetinWales,DeathValleyfollowstheunlikelycrime-solvingpartnershipbetweeneccentricnationaltreasureJohnChapel(Spall),aretiredactorandstarofhitfictionaldetectiveTVshowCaesar,anddisarmingdetectivesergeantJanieMallowan(Keyworth).ThrowntogetherbythemurderofJohn’sneighbor,JohnandJanieareanodd,yethilariousduowithopposinginstincts,andeachweektheygettothebottomofgrippingmurders.