In a hospital, theatrical producer Matt Saxon is introduced to writer Eric Busch, and ends up offering to produce Eric's new play with financing from millionaire Zack Humber.

Alma Wragge, a singer, is Saxon's girlfriend, but she warns Eric's wife Janet about the producer's notorious "Saxon charm" that coaxes others into doing his bidding, only to end up badly for everyone involved. Sure enough, Saxon's behavior soon ruins Alma's nightclub audition.

It isn't long before Saxon makes a pest of himself, interrupting a beach vacation Eric and Janet take, closing the show after a poor review, then persuading Eric to go off by himself to do rewrites. Saxon loses the financial backing of Humber so he works on his ex-wife, Vivian, to put up the money, not knowing she is broke.

Alma gets a chance to be in a Hollywood movie, but Saxon interferes with that as well. Janet, upset by Eric's absences, begins drinking and threatens to leave him. Eric finally punches Saxon, whose destructive nature contributes to his ex-wife's suicide but of which he appears to be unaware. Eric and Janet get away from him just in time.

• Robert Montgomery as Matt Saxon
• Susan Hayward as Janet Busch
• John Payne as Eric Busch
• Audrey Totter as Alma Wragge
• Harry Morgan as Hermy (as Harry Morgan)
• Harry von Zell as Zack Humber
• Cara Williams as Dolly Humber
• Chill Wills as Captain Chatham
• Heather Angel as Vivian Saxon
• Ed Agresti as Guest At Mexican Inn (Uncredited)
• Fay Baker as Mrs. Noble (Uncredited)
• John Baragrey as Peter Stanhope (Uncredited)
• Barbara Billingsley as Mrs. Maddox (Uncredited)
• Peter Brocco as Cyril Leatham (Uncredited)
• Kathleen Freeman as Nurse (Uncredited)

• List of American films of 1948

• The Saxon Charm at IMDb  
• The Saxon Charm at the TCM Movie Database
• The Saxon Charm at the American Film Institute Catalog
• The Saxon Charm at Letterboxd  
• {{Rotten Tomatoes}} template missing ID and not present in Wikidata.