Seating about 1000 people, the theatre was a huge success.  Ever the opportunist, Langrishe made sure the "business” made money even when a production wasn’t going on.  The performances actually took place on the second story, while the first floor of the building was reserved for a saloon and gambling hall.  Here, the frontiersmen enjoyed a variety of games including Faro, poker, roulette, monte, chuck-a-luck, 24-hours a day, seven days a week.  By 1876, Langrishe was ready to move on again, and the theatre was leased in 1876. The name of the theatre was changed to the Denver Opera House, but that lasted only a couple of weeks, before the name reverted to the Denver Theatre.  Unfortunately, the building was destroyed by fire in March, 1877.

In the meantime, Langrishe and his troupe had moved on, performing in many of the mining towns of the west.  In 1870, they built the Langrishe Opera House in Helena, Montana, which operated until 1874, when it was consumed by fire.

Traveling once again, the troupe arrived in Deadwood in July, 1876. Obviously well seasoned, he wasted no time in establishing a theatre in the thriving boomtown. Upon their arrival, the Langrishe troupe first performed in the Bella Union for a brief time before building thier own theater.  Late in 1876, the Deadwood Theatre, often referred to as the McDaniels Theatre, for the builder, or the Langrishe Theatre, was completed.  It was here that the trial of Jack McCall, Wild Bill Hickok’s killer, was first tried.

Exchanging stage performances for gold dust, the nightly performances played to a packed house, delighting the Deadwood audiences with the very latest Broadway hits, many concurrently running in New York and London.  During the day or at other times that no performance was being enacted, the new theatre building was often used for trials, receptions of distinguished visitors, funeral service and dances.  Though other "entertainment” existed in Deadwood when the Langrishe Troupe arrived, Langrishe's theater was the only one of the above that any respectable lady would set foot in.

The theatre was so successful that by 1878, Jack Langrishe relocated the theatre to a larger building on Sherman Street in South Deadwood.  It’s most famous star to perform there was Fanny Price, but the theatre also featured other well-known names of the time such as Charlotte Cushman, Jim and Belle Gilbert, Augusta Chambers, Viola Porter, and more.

But, like many a mining town, the success was not to last, as in early 1879, many of the miners began to move from Deadwood towards the next big mining strike in Leadville, Colorado.  The Langrishe Theatre’s last production in Deadwood was Our American Cousin on August 14, 1879.  Following the miners, the Langrishe Company also moved on to Leadville, where they performed the first show at the brand new Tabor Opera House on November 20, 1879 and continued performances through the end of the year.