Prince Harry is planning to go to London because his dad, King Charles, has cancer.
The king told Harry and his brother, Prince William, about his sickness before telling everyone else. Harry moved to California with his wife, Meghan, and their kids a while ago.
The news about Harry visiting London came out after Buckingham Palace said King Charles has cancer.
The palace said they found out about it when the king went to the hospital for something else.
They thanked the doctors for acting quickly. The king wants to share his news to stop people from guessing and to help others who are dealing with cancer.
This information is based on a report by Parade.