Before the murder of journalist Kim Wall by inventor Peter Madsen hit international headlines, few had heard of the world of amateur submarines, a small but obsessive group chasing the chance to go ever deeper. Like the author, I am very claustrophobic, and deeply suspicious of deep water, so of course the stories of spelunkers and divers fascinate me. And while I remember following the story of Kim Wall’s murder as it unfolded in the news, I didn’t follow it all the way until the […]