Someone is murdering the cast and crew of a new Hollywood movie, and the leading lady may be next. As a police detective locks down the lot and refuses to let anyone leave, the studio’s publicity head and his secretary attempt to solve the murders themselves.

Frances Drake
as Peggy Madison

Reginald Denny
as Johnny Morgan

Gail Patrick
as Claire Woodward

George Barbier
as Jerome Hewitt

Ian Keith
as E. Gordon Smith

Rod La Rocque
as Neil Du Beck

Conway Tearle
as Edwin Strange

Thomas E. Jackson
as Detective McKane

Jack Raymond
as George Tyson

Colin Tapley
as Studio Manager
CinemaSerf
Rod Laroque ("DuBeck") has been getting threatening letters as he tries to conclude a film shoot at Paramount. Nobody is much surprised as he is a bit of a pain in the neck, but when the unthinkable does happen it falls to Reginald Denny ("Johnny Morgan") to get to the bottom of things. He'd better ...