DC Comics' Sandman to crossover with Locke & Key in Hell and Gone - Polygon
Review - The Sandman Universe/Locke and Key: Hell and Gone #2 - Enter the Underworld - GeekDad
Amazon.com: Locke & Key: The Golden Age (Locke & Key/Sandman: Hell & Gone Book 7) eBook : Hill, Joe, Rodriguez, Gabriel, Rodriguez, Gabriel: Kindle Store