After 26-year-old Nicki Collingbourne evicted her half-sister, 52-year-old Yvonne Caylor, from her flat, the pair's already tumultuous relationship worsened. Just seven months later, Nicki was found dead in her home. Caylor was swiftly taken into custody, but detectives were left baffled at the revelation of an apparent mystery man spotted in the vicinity by CCTV cameras wearing a high-vis jacket and glasses. Join my Patreon community at patreon.com/britishmurders for exclusive perks, including early access to ad-free episodes, bonus content, exciting giveaways, and welcome goodies! Social Media: Facebook | British Murders with Stuart Blues Instagram | @britishmurders TikTok | @britishmurders X | @britishmurders Website: britishmurders.com Do you have a case request? Please send it to [email protected] or fill out a Contact Form at britishmurders.com/contact Intro music:⁣ David John Brady - 'Throw Down the Gauntlet'⁣ davidjohnbrady.com Disclaimer: The case discussed in this podcast episode is real and represents the worst day in many people's lives. I aim to cover such stories with a victim-focused approach, using information from publicly available sources. While I strive for accuracy, some details may vary depending on the sources used. I list the sources used in each episode on my website. Due to the nature of the content, listener discretion is advised. Thank you for your understanding and support. Learn more about your ad choices. Visit podcastchoices.com/adchoices