From the outside, 1117 Morningside Avenue looked like a standard American home. White panelled and consisting of two storeys, it was a cosy place for Billy Isom, Freta Bostic and Jesse Hanni to call their own. But when they were all found dead inside one winter morning, the feeling of homeliness changed. As the police tried to discover the secrets it held within its walls, the structure seemed intimidating and foreboding, unable to shed light on one of Iowa’s most grizzly crimes.