A music maestro uses hypnotism on a young model he meets in Paris to make her both his muse and wife.

John Barrymore
as Svengali

Marian Marsh
as Trilby O'Farrell

Donald Crisp
as The Laird

Bramwell Fletcher
as Billee

Carmel Myers
as Madame Honori

Luis Alberni
as Gecko

Lumsden Hare
as Monsieur Taffy

Paul Porcasi
as Bonelli

Ferike Boros
as Marta (uncredited)

Adrienne D'Ambricourt
as Mme. Vinard (uncredited)
CinemaSerf
John Barrymore is super as the eponymous mystic composer who entrances "Trilby" (Marian Marsh) after she comes to his studio with a desire to be a star; and a tendency to have headaches. Soon his avarice is evident as he ruthlessly exploits his charge (despite/because of his unrequited love for her)...