Can you ever tell if someone will go on to kill? Is hindsight 20/20? Or are some flags just too red to ignore?

The following is an adapted excerpt from "The Big Book of Serial Killers: 150 Serial Killer Files ... victims when they should be on the clock. Sign up here to get INSIDER's favorite stories ...

The condition is known as a 'silent killer' because it can cause serious health problems without any obvious symptoms ...

Southport killer Axel Rudakubana’s parents asked police four times for help with teen - Police were repeatedly called and ...

This bait-and-switch scam is an attempt to get people to share the post before it will be edited to say something that ...

Axel Rudakubana’s parents asked police for help to cope with their violence-obsessed son in one of a string of callouts over his worrying behaviour before the Southport attack, it can be revealed.