To Have And Have Not (1944)

In director Howard Hawks' adaptation (by William Faulkner) of an Ernest Hemingway novel, set in the French colony of Martinique during WWII - the locale of some French Resistance efforts; it was the first of four memorable films co-starring Bogart and Bacall: The Big Sleep (1946), Dark Passage (1947), and Key Largo (1948):

• the sizzling scenes between reclusive, charter fishing boat skipper Harry Morgan (Humphrey Bogart) and the slinky, sassy, husky-voiced, young Marie Browning (19 year-old Lauren Bacall in her film debut), a chanteuse in the local nightclub, located below their hotel rooms in Hotel Marquis [Note: the two used other nicknames: "Steve" and "Slim" - to mirror the relationship between director Hawks and his own wife Mary Gross, who was named "Slim"]
• "Slim's" delivery of lines dripping with suggestive innuendo, such as "Anybody got a match?" and then while sitting on his lap and initiating kisses: "It's even better when you help" and the following obvious, flirtatious come-on as she left his room: "You know how to whistle, don't you, Steve? You just put your lips together - and blow"
• and the final tense showdown scene when Morgan lashed out at the authorities to secure his alcoholic sidekick Eddie's (Walter Brennan) release and safe passage for them and his boat: ("You're both gonna take a beating 'til someone uses that phone. That means one of you's gonna take a beating for nothin'. I don't care which one it is")