There were police and press at the entrance and we thought it was a fantastically realistic event.
It was only then that the police told us there had been a real incident and two people were dead.
The hotel had left us a voicemail message which we hadn't picked up. They allowed us to stay the night though the murder mystery evening had been cancelled.
More top news
A humid night for some with thundery downpours in places.
The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Daniel Cowell has been jailed for five years and four months after ramming a police patrol car with a stolen transit van.