It's Not Cricket

Major Bright and Captain Early are intelligence officers in the British army of occupation in Allied-occupied Germany. They are sent home on leave, but fail to notice that their new Batman (military) is actually wanted War crime#London Charter / Nuremberg Trials 1945 Otto Fisch. He vanishes on arrival in England and the two officers are punished by early demobilisation. Uncertain what to do in wikt:civvy street, they decide to utilise the "skills" they learned in the army and set up a private detective agency, "Bright and Early". They engage a secretary, Primrose Brown, but she's not very busy as they have as yet no clients.