Escape from Shadow Island

Max is an ordinary north London schoolboy by day, but at night he performs sell-out public shows as an escapologist - nicknamed The Half-Pint Houdini by the tabloid press. His father, Alexander, was also a world-renowned escapologist, who disappeared two years earlier in the Central American state of Santo Domingo. His body was never found, but Max's mother, Helen, was convicted of murdering her husband by a Santo Domingan court.

One evening, after his show, Max receives a visit from a mysterious man from Santo Domingo. Lopez-Vega tells Max that his mother's trial was rigged and, if Max comes to his hotel room the following night, he has something to give him. When Max goes to the hotel, he finds Lopez-Vega dead, shot through the head. The room has clearly been searched by the killer, but what was he looking for? By chance, Max finds a piece of paper hidden under Lopez-Vega's wig. Written on the paper is a sequence of eight numbers - 83521113.

What do the numbers mean? Are theya code, or maybe the combination for a lock or a safe? Could they be the key to unlocking the mystery of his father's disappearance and getting his mother out of prison?