Through the double clamour of Big Ben and the shrill sound of the division bell rang a revolver shot. A financier is found shot in the House of Commons. Suspecting foul play, Robert West, a parliamentary private secretary, takes on the role of amateur sleuth. Used to turning a blind eye to covert dealings, West must now uncover the shocking secret behind the man’s demise, amid distractions from the press and the dead man’s enigmatic granddaughter.