Internet sleuths hunt for clues on murder of UnitedHealth's Brian Thompson
Triangulating data of a rental bike to uncover an escape route.Wednesday's shocking murder in Manhattan of UnitedHealthcare CEO Brian Thompson - what police called a targeted killing - brought out a bevy of sleuths and true-crime fans across social media looking for clues about the killer's motivation and how he managed to flee from the scene and seemingly disappear into the city of more than 8 million people.