Three members of a theatre audience injured when they plunged 20 feet through a temporary stage are to sue for damages.
The people who fell through the stage were in fancy dress
Birmingham-based law firm Irwin Mitchell said the women planned to take action against the city's Alexandra Theatre.
More than 30 people - many dressed as nuns - fell into the orchestra pit during a performance of the musical Sound of Music last month.
Solicitor Philip Edwards said the trio were seeking compensation for their injuries, which include fractures, cuts and bruising.
He said they were also looking to be compensated for the psychological trauma of being involved in the "horrific" incident.
Several people dressed in lederhosen or as nuns suffered a variety of serious injuries after being invited on to a temporary stage set up over the orchestra pit for the Sing-a-Long Sound of Music show.
Mr Edwards said: "A fun night out turned into a nightmare and a lot of people have been very seriously injured.
"It was pretty horrific to go through - the scene was one of carnage."
Mr Edwards said the legal action would look into whether the theatre had failed to ensure the safety of theatregoers.
The Alexandra is helping Birmingham City Council to investigate the incident.