A family in Britain is upset with police after a new investigation began in Australia

A family in Britain is angry with police. Their young child disappeared many years ago. Now, police in Australia are starting a new investigation. They want to find answers about old murder cases.

The police in Australia will look at many cold cases. A cold case is an old crime that was never solved. Detectives want to find new information. They hope to understand what happened.

Police think a famous killer may be responsible for more murders. This killer is very dangerous. He may have killed many people over many years. Police want to learn the truth about his crimes.

The British family is not happy with how police worked before. They say police did not help them enough. The family wanted better answers. They wanted police to find the person who hurt their child.

Now this new investigation gives them hope. Perhaps police will find new facts. Perhaps they will finally understand what happened. The family wants justice for their child.

This case shows why old investigations are important. Sometimes new detectives find what old detectives missed. New technology can help too. Police can now use better tools to find answers.

The investigation is still new. Police will work for many months. They will talk to many people. They will study old files and evidence. The family waits for answers.

Inspired by reporting from BBC News.