In the latest instalment of the series, we hear from a witness who tried to save 14-year-old CJ Davis after he was shot in a suspected gang killing in east London in 2017.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 28th 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. See acast.com/privacy for privacy and opt-out information.