999 Murderer Calling

Luke D'Wit tricks his millionaire neighbors into thinking he is a harmless IT geek before poisoning them to take over their business; his harrowing call to the police gives detectives their first clues to bring the poisoner to justice.

Young mother feared dead and ex-partner confesses, then retracts; undercover cop reveals truth seven years later; separate case involves 10-month-old baby's death.

Mitesh Patel strangles his wife to claim insurance and start a new life with his lover; after ransacking their home to make it look like a burglary gone wrong, he makes a tearful call to emergency services, unknowingly leaving clues as he speaks.

David and Ann-Marie Pomphret seemed a close and loving couple; when Ann-Marie is found battered to death, a distraught David calls the police; forensic scientists detect microscopic blood cells on his unwashed socks and the truth is revealed.

Andrew Pearson kidnaps his ex-partner Natalie Harker before strangling, drowning and sexually assaulting her; in a distraught call to police, he tries to claim her death was an accident but inadvertently leaves a series of clues as he speaks.

In a 999 call, Julie Dixon says two masked men set fire to her partner's workshop, killing him; she is the only witness, but when investigators make a shocking discovery, the lies begin to unravel.