Kris Kremers and Lisanne Froon took this selfie while on a hike in Panama from which they never returned.

Archduke Franz Ferdinand with his wife on the day they were assassinated by Gavrilo Princip on June 28, 1914.

Two friends posted this selfie on Facebook. Later that night the girl on the left strangled her friend with the belt she is wearing in the photo.

Minutes after this photo was taken, this Vietnamese woman and her children were killed by US soldiers in the My Lai Massacre.

A serial killer took this photo of his victim Regina Kay Walters moments before her death.

Cherise Perrywinkle, 8, is led out of a Walmart by her murderer

Sydney Loofe posted this image to social media before being strangled on a Tinder date.

Final photograph of Jolee Callan before her ex-boyfriend shot and killed her and then pushed her off a cliff.

The Crew Of Space Shuttle Challenger On Their Way To Board. Challenger Broke Apart 73 Seconds Into Its Flight, Killing All Seven Crew Members

The last picture taken by Reynaldo Dagsa, who inadvertently captured the face of his assassin moments before he was shot and killed

This still from video news coverage shows one of the last ever images of police officer Steven Green, shortly before he was stabbed to death by the suspect on the right.

In 1853 a man named Joseph Avery can be seen desperately clinging to a log in the middle of the Niagara River. Avery was part of a group of three men that were boating along the river, their vessel losing control in the strong current and smashing into a rock.

Filipino TV star and dancer Franco Hernandez shortly before drowning.

Lance Calvin Buckley with his wife and daughters, Halloween 2016. Three weeks later he murdered all three, then killed himself.