->'''''Leonard Vole''': But I've done nothing! This is England! You don't get arrested or convicted for something you haven't done!\\
'''Sir Wilfred''': We try not to make a habit of it.''

A short story by Creator/AgathaChristie, made into a 1957 film.

Leonard Stephen Vole, an amiable and good-natured blood donor with an excellent war record, has been charged with murder. The victim: Miss Emily French, a lonely but wealthy widow with whom Leonard had become friendly recently. Unfortunately for Leonard, it is revealed that Miss French had left Leonard eighty thousand pounds, making for quite a motive. Leonard's case rests entirely on circumstantial evidence, and his acquittal relies on the testimony of his cold and calculating German wife, Christine Vole, who is the only person who can provide an alibi. Leonard and his solicitor seek the advice of London's best and most experienced barrister, Sir Wilfred Robarts, who takes Leonard's case himself despite his rapidly deteriorating health.

What follows is a three-day trial, during which time the prosecution makes a convincing case for Leonard's guilt and Sir Wilfred attempts to prove his innocence. After some time, a surprise witness is called, and twist after twist keeps everyone in the courtroom - and the audience - on the edge of their seats.

The film version was directed by Creator/BillyWilder and starred Tyrone Power as Leonard, Creator/MarleneDietrich as Christine and Creator/CharlesLaughton as Sir Wilfred. Tyrone Power's last film, as he suffered a fatal heart attack on the set of his next production, ''Film/SolomonAndSheba''.

Incidentally, as this film is over 50 years old, nothing below is spoiler-tagged. If you ever plan to see it, don't read anything further.
!!This film provides examples of:

* TheAdventureContinues: The film ends with Sir Wilfred declaring that he will be acting as the defense for Christine Vole.
* AmoralAttorney: Averted. Mr. Meyers, the prosecuting attorney, is actually a very polite and civil man. He's just doing his job.
* AnnoyingPatient: Sir Wilfred, who screams at Mrs. Plimsoll and sabotages her treatment, when all she's trying to do is keep him from going into another coma.
* BatmanGambit: Sir Wilfred tells Christine that while she can't be forced to speak against her husband, the testimony of a loving wife will count for very little in a murder case. So she plays a cold, unfaithful wife who is then discredited by new evidence to "prove" Leonard's innocence.
* BlondesAreEvil: Christine.
* ChekhovsGunman: The emotional young woman sitting behind Mrs. Plimsoll in court. She's Leonard's lover.
* CourtroomAntics: Mild compared to some cases, but Sir Wilfred plays a few tricks during the trial. Leonard also loudly contradicts Christine's testimony from the gallery, for which the judge does threaten to throw him out of court.
* DeadpanSnarker:
** Sir Wilfred.
** The judge gets in a good one when he's asked by a witness if he could expedite her getting a new hearing aid.
-->"With all the rubbish being talked about these days you're not missing much."
* DoNotSpoilThisEnding: When the film was released it ended with a voiceover urging audiences not to reveal the twist ending.
* TheEndingChangesEverything: And how it does.
* ExactWords: Everything Christine says under oath is true, even when it seems to be self-contradictory or misleading. She really did see Leonard come home at the time she said he did; she really doesn't know anyone named Max, and any letters allegedly written by her to him are forgeries; and she really did write a letter to "Max" which seems to clear Leonard of the murder.
* GoodLawyersGoodClients: Sir Wilfred only decides to defend Leonard Vole after he's convinced of his innocence.
* HesDeadJim: Nine seconds of pulse taking were sufficient to declare Leonard dead.
* HighClassGlass: Sir Wilfred sports one of these, and [[ScaryShinyGlasses uses it]] when interviewing clients.
* HollywoodLaw: Surely a barrister of Sir Wilfred's experience could have gotten Christine's testimony for the prosecution disallowed by arguing that since Leonard Vole did not know she was already married, that would make her his putative spouse and thus spousal privilege would still apply.
* IOweYouMyLife: How Leonard and Christine's relationship started; their marriage allowed her to escape post-war Germany.
* ManipulativeBastard: Leonard twists both Christine and Wilfred around in different ways.
* MasterActor: Christine and Leonard both.
* MyGodWhatHaveIDone:
** Christine claims this as the reason she testifies against Leonard in court when she backed up his alibi to the police: she might owe him, but she can't perjure herself for a murderer.
** Sir Wilfred is incensed when he learns that he's acquitted a thoroughly guilty man.
* NotEvenBotheringWithTheAccent: Despite dialogue that uses distinctly British words and turns of phrase, and nothing in the movie suggesting his character is anything but English (he was in the RAF), Tyrone Power speaks with his native American accent.
* OldRetainer: Mrs. [=McKenzie=] was Mrs. French's housekeeper of ten years.
* [[ScaryShinyGlasses Scary Shiny Monocle]]: Sir Wilfred shines the light from his monocle into Leonard's eyes when he first interviews him as a client and later does it to Christine.
* ShesGotLegs: American servicemen in the shabby Berlin club where Christine is playing demand to see her legs, and get drunk enough to actually rip her pants off. This scene was written into the movie specifically for some Marlene Dietrich {{Fanservice}}.
* SignificantDoubleCasting: Yep, that's Dietrich selling letters.
* SurpriseWitness: Christine twice over, once when she's unexpectedly called by the prosecution, and once when Sir Wilfred recalls her.
* TimePassesMontage: Marked by the number of Sir Wilfred's pills (taken on the hour) that remain.
* TitleDrop: At the end, when Christine reveals to Sir Wilfred that she wanted to be a witness for the prosecution, because a supportive wife wouldn't have been believed.
* TwistEnding: And you thought ''Film/TheUsualSuspects'' was a MindScrew.
** BornInTheTheater: A voiceover during the end credits encourages viewers not to [[{{Spoiler}} Spoil]] the ending in the name of "the management of this theater".
* UngratefulBastard: Christine, for testifying against her husband when he rescued her from postwar Germany. But really, it's Leonard, who ditches Christine for another woman even as she's perjuring herself for him.
* TheVamp: Christine.
* WigDressAccent: Christine's Cockney disguise.
* WhamLine: "No, Sir Wilfred, you do not understand at all. I knew [Leonard] was guilty."
* WhatTheHellIsThatAccent: The woman who sells new evidence to Sir Wilfred is making a truly ''atrocious'' attempt at a Cockney accent.
* WorthyOpponent: Mr. Meyers has a good deal of professional respect for Sir Wilfred and even makes a wager with him on the outcome of the trial.