Indiscreet

Famous London-based theatre actress Anna Kalman returns from Mallorca, bored with her latest romance. Her sister Margaret and brother-in-law Alfred Munson arrive at Anna's London apartment with Philip Adams, a handsome American economist being courted for NATO in Paris. The group urges Anna to attend Philip's dinner lecture that evening.

The group attends Philip's dinner lecture on economics, which Anna initially tolerates but soon finds herself drawn to his wry humor about boring speeches. She grows intrigued by Philip as the evening unfolds. The plan also includes a late invitation to the ballet that night.

At the end of the evening, Philip confesses that he is married but separated and unable to divorce. He explains he does not want to pretend to be married, yet he is attracted to Anna. Anna, hesitant but intrigued, invites him to the ballet again, and he accepts.

Anna and Philip hit it off on their first date, and Philip agrees to take a NATO position in Paris so he can visit London more often. The arrangement promises frequent reunions and a serious romance. Their relationship deepens against the backdrop of London’s social world.

As their romance grows, Philip receives a temporary transfer to New York for NATO work, threatening a separation of up to five months. Anna is distressed by the prospect of such a long absence and contemplates following her heart across the Atlantic. The couple grapples with distance ahead.

On the eve of Philip's sailing, Alfred privately tells him that he knows Philip is a bachelor and questions why he told Margaret he was married. Philip defends his stance, insisting he loves Anna and intends to marry, but wants to avoid false expectations. He confides plans to surprise Anna for her birthday and stay a few extra days before joining the New York team.

Anna plans to travel to New York to surprise Philip, prompting Margaret to reveal that she has learned Philip is unmarried by peeking at a Scotland Yard report on Alfred's desk. Anna reacts with fury at the deception but secretly resolves to get even. The revelation introduces a new plan to test Philip's honesty.

Anna schemes to appear as though she is having an affair with David, her former flame, to lure Philip into a midnight trap. David is unexpectedly hospitalized with an injury, so she enlists her elderly butler, Carl, to stand in as David and perform the staged rendezvous. They practice Carl's entrance for the clock strike of twelve.

As the clock strikes twelve, Philip arrives for his midnight surprise and unexpectedly proposes marriage, presenting a diamond bracelet. Carl slips into Anna's room in a robe and then steps away to maintain the illusion. The moment is charged with tension as the truth of the ruse presses in.

Before Anna can explain the deception, Philip lashes out about infidelity and leaves in anger. He returns later, and Anna works to clear up the confusion, explaining the ruse and her true feelings. The emotional clash tests their budding relationship.

Anna and Philip agree to forgive their deceptions and choose happiness together, recognizing each other’s flaws. Philip becomes more open to commitment and expresses a desire to marry. The couple's bond strengthens as they move toward a future built on honesty.

Overwhelmed with joy, Anna watches Philip reaffirm his intent to marry and share a life together. The birthday marks a new beginning for the couple, who embrace and look forward to a future filled with trust, love, and mutual plans. The film ends with their hopeful embrace.