A number of children were reportedly left traumatised after a trailer for a horror movie was shown prior to a screening of the latest Peppa Pig blockbuster.
The incident happened at the Empire Cinema in Ipswich, UK.
It is understood that a small number of children began crying, prompting others to do likewise. Soon, the crying spread throughout the entire audience.
A few mothers raised the alarm and the trailers were immediately stopped, but trauma had already been caused.
Local authorities are investigating how the mix-up occurred.