John Conner & Olivia Cornu are exploring some of the craziest true crime cases of all time in a brand new, weekly, interactive podcast, where the listeners get a say in just how scary each true crime case really is. If you find yourself falling asleep to serial killer documentaries, researching true crime cases, and spending your free time thinking about what makes a murderer snap, then Check the Locks needs your killer instincts to decide - which cases are evil enough to make you check your locks?