The Lost One Poster

The Lost One 1951

★ 6.731 votes98 min📅 1951-09-07

Directed by the legendary Peter Lorre, *The Lost One (1951)* unfolds a chilling moral dilemma set against the backdrop of World War II.

Director: Peter Lorre

Cast

Peter Lorre
Peter Lorre
Dr. Karl Rothe, alias Dr. Karl Neumeister
Karl John
Karl John
Hösch, alias Nowak
Helmuth Rudolph
Colonel Winkler
Johanna Hofer
Johanna Hofer
Mrs. Hermann
Renate Mannhardt
Renate Mannhardt
Inge Hermann
Eva Ingeborg Scholz
Eva Ingeborg Scholz
Ursula Weber
Peter Ahrweiler
Oberstleutnant Marquardt
Gisela Trowe
Gisela Trowe
Prostitute
Richard Münch
Richard Münch
1. Kriminalbeamter
Lotte Rausch
Lotte Rausch
Woman on the train

Frequently Asked Questions

What is The Lost One (1951) about?

*The Lost One* follows a German scientist whose world shatters when he learns his fiancée has sold his life's work to the enemy. Haunted by the revelation, he confronts her in a moment that spirals into violence, blurring the lines between victim and perpetrator.

Who directed The Lost One?

Peter Lorre directed *The Lost One*, bringing his signature blend of psychological depth and noir-style tension to this post-WWII drama.

Who stars in The Lost One?

The film stars Peter Lorre as the tormented scientist, alongside Karl John, Helmuth Rudolph, Johanna Hofer, and Renate Mannhardt in pivotal roles.

Is The Lost One (1951) worth watching?

While unrated on IMDb, *The Lost One* offers a gripping, morally complex narrative that rewards fans of classic crime thrillers. Its themes of betrayal and wartime ethics make it a compelling watch for those seeking thoughtful cinema.

How long is The Lost One?

The Lost One has a runtime of 98 minutes.

About The Lost One (1951) — A WWII-era thriller of love, betrayal, and moral collapse

Directed by the legendary Peter Lorre, *The Lost One (1951)* unfolds a chilling moral dilemma set against the backdrop of World War II. In this tense thriller, a dedicated German scientist discovers his fiancée has been betraying his country by selling his classified research to the enemy, a revelation that pushes him to a breaking point. The film masterfully blends psychological intensity with a stark critique of wartime ethics, where love and loyalty collide in a devastating climax. Lorre's direction infuses the story with a claustrophobic atmosphere, while the stark black-and-white cinematography heightens the tension between personal betrayal and national duty.

As a post-war exploration of guilt and consequence, *The Lost One* transcends its crime-drama roots to deliver a haunting meditation on human frailty. The narrative's moral ambiguity lingers long after the credits roll, challenging viewers to question where loyalty truly lies when the world is torn apart. With its gripping performances and unflinching portrayal of wartime espionage, this film stands as a forgotten gem in Lorre's filmography, offering a rare blend of suspense and tragedy that resonates with fans of classic cinema.