<div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Mass murderer Jack Gilbert Graham was executed on </span><a href="https://www.9news.com.au/national/today-in-history-on-this-day-january-10-german-prisoner-of-war-tunnel-escape/ea747bfa-bb02-434b-8f3b-f5aa3e74a3dd" rel="" target="" title="January 11, 1957"><span>January 11, 1957</span></a><span>, after he used a dynamite time-bomb to blow up a plane mid-flight.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Graham wanted to murder his mother to claim tens of thousands of dollars in life insurance.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>So the </span><a href="https://www.9news.com.au/usa" rel="" target="" title="US "><span>US</span></a><span> man placed a time-bomb in her luggage on a flight from Colorado to </span><a href="https://www.9news.com.au/oregon" rel="" target="" title="Oregon "><span>Oregon</span></a><span> on November 1, 1955.</span></div></div><div><div id="adspot-mobile-medium"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/world/today-in-history-december-17-what-happened-on-this-day-harold-holt/50376feb-a0cd-4f4c-b449-6e407b3f1780" target="" title="Harold ignored doctor's advice and vanished days later"><strong><span>Harold ignored doctor's advice and vanished days later</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>The crash killed his mother and the other 43 people on board instantly.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Within a few days, investigators concluded there must have been a mid-air explosion.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>They then began a painstaking process of finding the person responsible by sorting through luggage scattered over a wide area.</span></div></div><div><div class="OUTBRAIN" data-reactroot="" data-src="//www.9news.com.au/world/today-in-history-january-11-what-happened-on-this-day/c0e1df84-b47a-4468-aea8-8aea34619059" data-widget-id="AR_5"></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Inside the handbag of Daisie King was a series of newspaper clippings about her family, including her son Graham.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Among the clippings was a newspaper story about Graham being charged with forgery.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Also drawing suspicion was the fact none of her luggage had survived the explosion.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>While other bags were intact or damaged, hers had been completely destroyed.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/world/today-in-history-december-24-what-happened-on-this-day-juliane-koepcke-german-teen-plane-explosion-survivor-peru-amazon-jungle-survival-story/c37e531a-8770-4ae5-b88a-3be8481783d5" target="" title="The girl who fell 3km from a plane explosion and survived"><strong><span>The girl who fell 3km from a plane explosion and survived</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>It was soon found that Graham had placed a travel insurance policy on the life of his mother worth $37,500.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Graham signed a confession after the FBI threatened to prosecute his wife for giving inconsistent statements.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>He admitted to blowing up the plane using 25 sticks of dynamite, an immense amount for the task.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>He was charged with murder after it was realised there was not a law against bombing an aircraft.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>Psychiatrists were shocked by his blase attitude towards the deaths of the others aboard the flight.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"The number of people to be killed made no difference to me; it could have been a thousand," he said.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"When their time comes, there is nothing they can do about it."</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/world/today-in-history-september-23-what-happened-on-this-day-charade-copyright-error/5df60beb-3ff9-454d-9e4f-607c0cf081f8" rel="" target="" title="Tiny oversight cost beloved movie its copyright"><strong><span>Tiny oversight cost beloved movie its copyright</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>He initially pleaded not guilty for reason of insanity, then changed it to just not guilty.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>But the jurors were not impressed with his defence. It took just 69 minutes of deliberation before he was found guilty.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>He was unrepentant as he was led into the gas chamber.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><span>"As far as feeling remorse for those people, I don't. I can't help it. Everybody pays their way and takes their chances. That's just the way it goes," he said.</span></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><strong><span>READ MORE:</span></strong><span> </span><a href="https://www.9news.com.au/world/today-in-history-november-2-what-happened-on-this-day/91455bd4-a2ee-414a-874a-d8e8d8b6b39f" rel="" target="" title="Technician murders seven co-workers over new photocopier"><strong><span>Technician murders seven co-workers over new photocopier</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><a href="https://www.9news.com.au/today-in-history" target="" title="For more from our Today in History archive, click here."><strong><span>For more from our Today in History archive, click here</span></strong></a></div></div><div class="block-content"><div class="styles__Container-sc-1ylecsg-0 goULFa"><a href="https://www.9news.com.au/national/how-to-follow-9news-digital/29855bb1-ad3d-4c38-bc25-3cb52af1216f" target="_blank"><strong><em><span>DOWNLOAD THE 9NEWS APP</span></em></strong></a><strong><em><span>: Stay across all the latest in breaking news, sport, politics and the weather via our news app and get notifications sent straight to your smartphone. 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