Katie Simpson’s love for horses brought her into the orbit of Jonathan Creswell, a showjumper-turned-horse trainer with a dark history of coercive control and violence against women. When he claimed to be the Good Samaritan who found the 21-year-old after she attempted suicide, some were immediately suspicious. But for months police seemed to take his story at face value. Jennifer O’Leary investigates Katie’s terrible death and how his lies almost went undetected.