The Lindsays are doing a final episode about mysterious disappearances, after which that topic will not-so-mysteriously disappear! So this week it's the MV Joyita, Dorothy Arnold, Frederick Valentich, Joan Risch, Ray Gricar, Béla Kiss, the Sodder Children and Louis Le Prince. We'll be back with a new episode next week (unless we mysteriously disappear, which we... probably won't).