Photo of the tall man

Today I read Photo of the tall man, YL 3.1 from Penguin Readers series. Kelly came to London to find her job, but it was hard because she failed the exam and she was too young. Also, strange things happened around her. She and her cousin, Adam tried to take pictures for her uncle. Her uncle, Max was a newspaper photographer. He had tried to take pictures of the tall man, but he was injured due to the man.
Can Kelly and Adam take pictures of the man? Also, Can she find her good job? This story was mystery of an accident. I feel it's a little difficult. Let's try reading this if you want to solve the accident!