In today's episode we examine the gang culture of east London to look for clues as to what happened to the schoolboy, who was apparently caught up in this murky world.This podcast was brought to you thanks to the support of readers of The Times and The Sunday Times. Subscribe today and get one month free at: thetimes.co.uk/storiesofourtimes.  This episode was first released on 21st August, 2020.Host: John Simpson, the Times' crime correspondent.Investigation: If you have something you’d like to tell us you can reach the podcast team by phone, WhatsApp, and Instagram: 07535 785774, and @wkcjdtips.Anyone with information can also contact the police on the dedicated incident room number of 020 8345 3775, or 101. You can also make contact via Twitter @MetCC. To give information anonymously contact Crimestoppers on 0800 555 111 or online at crimestoppers-uk.org. The Metropolitan Police Service offers a £20,000 reward for anyone who can provide information leading to the identification and conviction of the person(s) responsible for CJ's murder.Anyone concerned they may know of a child being the victim of grooming can contact the police on 101 or the NSPCC.Clips: UK Drill YouTube channel, Olympic YouTube channel, BBC Three. See acast.com/privacy for privacy and opt-out information.