"The Quiller Memorandum" (1966) A Michael Anderson Photoplay

Having lost two agents in Berlin, British intelligence chiefs arrange for American agent Quiller to report to the local controller, Pol, and continue the assignment, which is to find the headquarters of Phoenix, a neo-Nazi organization.

Quiller leaves the Konigshof Hotel in West Berlin and confronts a man who has been following him, learning that it is his minder, Hengel. Hengel gives Quiller the few items found on his dead predecessor: a bowling alley ticket, a swimming pool ticket and a newspaper article about a Nazi war criminal found teaching at a school.

Pretending to be a reporter, Quiller visits the school featured in the article. The headmistress introduces him to a teacher who speaks English, Inge Lindt. After the interview, Quiller drives Inge to her flat and stops for a drink.

Confronting a man who seems to be following him, Quiller reveals that he really speaks German fluently. When he returns to his hotel, a passing porter bumps Quiller's leg with a suitcase on the steps. Quiller drives off, managing to shake Hengel, then notices men in another car following him. But Quiller has become drowsy from a drug that was injected by the porter at the hotel; when he passes out at a traffic stop, the other car pulls alongside and abducts him.

Quiller awakes in a dilapidated mansion, surrounded by many of the previous incidental characters. They are all members of Phoenix, led by the German aristocrat code-named Oktober. Though Quiller avoids answering questions about his agency, a doctor injects him with a truth serum, after which he reveals a few minor clues. In a feint to see if Quiller will reveal more by oversight, Oktober decides to spare his life.

Quiller comes round beside Berlin's Spree River. He steals a taxi, evades a pursuing vehicle and books himself into a squalid hotel. He calls Inge from there and arranges to meet her that evening at her flat. There he admits to her that he is really an "investigator" on the trail of neo-Nazis. After they have sex, she unexpectedly reveals that a friend was formerly involved with neo-Nazis and might know the location of Phoenix's HQ. The friend proves to be the swimming pool attendant, Hassler, who drives them to meet an old contact that he says knows a lot more. This turns out to be Inge's headmistress, who claims she turned in the teacher from the article and points out the dilapidated Phoenix mansion.

Quiller decides to enter the building, while Hassler and the headmistress leave one of their cars for him and Inge. But while he investigates, Quiller is confronted by Phoenix thugs. Oktober reveals they are moving base the next day and then that they have captured Inge. Quiller must reveal where his base is by dawn or Inge will be killed.

Allowed outside to think about it, Quiller finds he is being followed down the street by Oktober's men. After failing to shake them off, Quiller returns to his hotel, but then slips out though a side door to the small garage yard where his car is kept. He finds that a bomb has been strapped underneath and sets it on the bonnet of the car so that it will slowly slide and fall off due to vibration from the running engine. He manages to get over the wall of his garage stall as well as the adjoining one and then outside to the side of the building before detonation. The thugs believe him dead when they see the burning wreckage.

When Quiller reaches Pol's secret office in Berlin, he gives Pol the location of the building where he met Oktober. Pol dispatches a team to Phoenix's HQ, which successfully captures the neo-Nazis there, but there is no report of a woman being discovered.

Quiller returns to Inge's school and confronts her in her classroom. She states that she was lucky that they let her go and that there was no answer from the phone number he gave her for emergencies. Quiller suspects that not all the neo-Nazis were captured but can get Inge to admit nothing. As he leaves, he startles the headmistress on her way in.