An investigative journalist who takes a deep interest in the circumstances surrounding Zac's case. He approaches the mystery with a methodical, forensic mindset, seeking to understand both the immediate facts and the broader civic environment. His involvement provides an independent avenue for truth-seeking outside official channels.

A 19-year-old from a middle-class family who develops an intense preoccupation with money and status. He is charismatic and possesses a remarkable memory, but struggles with feelings of inadequacy after academic rejections. To access the elite circles he admires, he constructs an elaborate, fraudulent identity as the son of a Russian billionaire.

Zac's parents, who come from a background of modesty and intellectualism. Matthew works in structured finance, while Rachelle is a freelance journalist. They are both children of Holocaust survivors, a legacy that instills in them a deep sense of moral duty. Following their son's disappearance, they manage official police channels while launching their own private inquiry into his secret life.

A seasoned figure in London's criminal underworld with a history of involvement in extortion and violence. Known to associates as "Indian Dave," he operates with a menacing reputation and an ability to evade serious legal consequences. He offers Zac a place to stay, initially presenting himself as a generous benefactor.

A Cambridge-educated businessman in his forties who lives in the exclusive Mayfair district. As the son of a disgraced tycoon, he moves between various ventures while cultivating a polished, respectable veneer. He acts as a mentor to Zac, introducing him to influential figures and bringing him into his social circle.

Akbar's father and a former Ugandan Asian refugee who built the vast Gomba Group business empire in the United Kingdom. He leveraged his wealth to cultivate political connections before his enterprise collapsed in scandal. His legacy of ambition and flexible business ethics provides the foundation for his son's worldview.

Zac’s older brother. He sets a high academic standard that his younger sibling struggles to match, representing the conventional path of achievement within their family.

Rachelle’s father and Zac’s maternal grandfather. He is a celebrated rabbi, BBC broadcaster, and Holocaust survivor who built a highly respected public profile in Britain.

Matthew’s father and a Holocaust survivor who escaped Nazi Germany alone as a teenager. His historical consciousness makes him deeply distrustful of official narratives regarding his grandson.

A mid-level contractor for the Chelsea Football Club. He finds Zac's claims of extreme wealth plausible and provides the critical introduction that brings the teenager into contact with older businessmen.

A private investigator hired by the Brettler family. He encounters obstruction from key witnesses while attempting to trace Zac's final movements.

Verinder Sharma’s daughter. She is present at her father's apartment during a tense evening and later provides official testimony regarding the events she witnessed.

A Detective Inspector with the Metropolitan Police. He leads the official inquiry into Zac's case, representing a police force that is severely under-resourced and structurally limited.

A coroner who manages the formal proceedings and witness testimonies. She controls the flow of evidence and limits specific lines of questioning regarding financial motives.

A wealthy gambler and investor with a questionable reputation. He reportedly pays the rent for the luxury Riverwalk apartment occupied by Verinder Sharma.