- Adaptation Displacement: The movie is a classic, while the novel is overshadowed both by the movie and Highsmith's later works, particularly the Ripliad.
- Foe Yay: Bruno's plan would have worked - had he not been so interested in Guy.
- Funny Moments: while Bruno is stalking Miriam, a little kid walks up to him pointing a toy gun and says "Bang, bang!" Bruno just gives him a blank look for a moment. As the kid leaves, Bruno pops his balloon with his cigarette and the kid gives him this unbelieving look.
- Harsher in Hindsight: The ending, with Bruno dying after the merry-go-round crashes. Robert Walker died accidentally about a month after the film was released (from an adverse reaction to prescription drugs).
- Idiot Ball: A fair amount of the drama could have been easily avoided if Guy had just gone to the police after finding out Bruno killed his ex-wife. If Bruno accused him of conspiracy, Guy could mount an easy defense since there was no exchange of money, no evidence of coercion, the two men had never met before and Bruno's father could've easily testified to his son's general instability, which he probably would have done because he believed Bruno needed help. In addition he was more-or-less the son-in-law of a Senator, which would have probably given him access to a more than competent defense attorney.
- What's more, the police could've easily verified Guy's alibi for the night of the murder. Even if Guy's witness didn't remember him, the platform/train attendants who presumably took his bags at New York and then Washington could have identified him and debunked the theory that he got on at Baltimore.
- Nightmare Fuel: Most of the long sequence where Bruno silently stalks Miriam and her companions around the park qualifies. However, special mention goes to the moment where she turns around as if she knows she's being watched, then turns back to find him standing right next to her.
- Then there's the scene at the party where Bruno nearly strangles a woman while staring at Babs. Had he not fainted shortly after, she probably would have died.
- Retroactive Recognition: Two future Bewitched cast members are here: Marion Lorne (Aunt Clara) as Mrs. Antony, and Laura Elliott/Kasey Rogers (Louise Tate) as Miriam Haines.
- Special Effects Failure: The merry-go-round scene has not aged well.
YMMV / Strangers on a Train