Cryptic Killers: Murder In Market Hill

In 1965, my Uncle Percy admitted to the murder of a journalist called Randall Tomlinson by pushing him in front of a train. After Percy was freed from prison, I developed a close bond with him, and it became increasingly apparent to me that he might have admitted to a crime he didn't commit. Unfortunately, Percy recently passed away without taking the opportunity to restore our family's reputation. Motivated to uncover the truth, I've begun to delve deeper into his case, convinced there is more to the story than meets the eye. I now need your help as a private detective to identify the real killer.