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Detective Steve Keogh talks to SIO Richard Leonard who reveals how the Police solved the 2017 murder of Sophie Lionnet by her employers Kouider and Medouni. Experts, witnesses, and Sophie’s mother share insights.

Detectives Steve Keogh and Steve Whittaker discuss Aseel Al-Essaie’s murder by Cohen, Gordon and Bryan. Fire, CCTV and phone experts share insights.

A serial killer targets men in North London parks. Detectives race to catch him before he strikes again. Experts analyse his motives.

In 2021, John Hay, a former police officer, failed to return to his West Yorkshire home and SIO Lisa Griffin ordered phone record analysis of strange calls from an 'Eric Johnson'.

In 2022, Kenneth Ford was found murdered in his Birmingham home. DI Michelle Thurgood used witness statements combined with CCTV analysis to track down Gary O'Neill.

In 2014, Miltiades 'Milton' Papadopoulos was found dead in his Potters Bar home. DCI Jo Sands used phone data analysis to find his killers, leading to several arrests.

In 2009, taxi driver Mohammed Ashad picked up a fatal fare in Birmingham. DS Sheila Thornes used forensics and CCTV to find the perpetrator of the senseless violence.

In 2023, 14-year-old Nathaniel Shani was fatally stabbed in Manchester. SIO Gina Brennand finds his killers in the form of two boys, just teenagers themselves.

In 2018, 85-year-old Rosina Coleman was found dead at her Romford home by a man who presented himself as a concerned witness, but DC Claire Watts had suspicions.

In 2006, Sana Ali was stabbed over 40 times at her Stockport home - she was pregnant at the time. SIO Jane Antrobus soon learned of her husband's affair with Harmohinder Sanghera.