The music was by Harold Fraser-Simson, with additional music by James W. Tate, lyrics by Harry Graham and additional lyrics by Frank Clifford Harris and Valentine, and the book was written by Frederick Lonsdale, best known for his later society comedies such as On Approval.

Produced by Robert Evett (after being turned down by Frank Curzon) and directed by Oscar Asche (who had directed the record-setting hit Chu Chin Chow), The Maid of the Mountains ran for 1,352 performances in its initial London run – closing mainly because of the nervous exhaustion of its female lead, José Collins.

This highly profitable run saved the George Edwardes estate, then being managed by Evett, from bankruptcy.

Baldassaré meets and falls in love with Angela, the daughter of the retiring Governor, and becomes heedless of his danger in remaining in the town.

Beppo, one of the brigands who has always been in love with Teresa, asks her to persuade Baldassaré to leave the capital lest they all be discovered.

In the loneliness of his imprisonment, Baldassaré realises that his regard for Angela was only a passing infatuation, and that he loves Teresa.

He forgives her betrayal of him and, with the assistance of Lieutenant Rugini, the Governor of the prison, they escape by boat.

(1) José Collins, who sang the part of Teresa, the bandit "Maid", throughout the original run, became a star as the result of her performance.