DC Weller was the police detective heading the investigating team after David Platt had pushed his mother, Gail, down the stairs of their home in March 2008. Gail's lack of memory about the event meant that the police officer was unable to gather evidence to make a prosecution but events took a different turn one month later when David went on a destructive rampage down the Street and ended up being arrested, tried and imprisoned for this offence. Gail protected her son by not informing then that her fall down the stairs was due to malicious intent, even after David had confessed to her.