 On 11 December 2017, the group released "Crack My Heart" as the second single from "Underworld", while on 4 January 2018, the third single, "Disappear" featuring PVRIS' Lynn Gunn, was released.The album was released on 12 January via UNFD in Australia and Hopeless Records internationally.In December 2018, after performing at the inaugural Good Things festival, the band announced they were going on an international touring hiatus and cancelled their upcoming US tour, in order to "address and prioritise" their "mental and physical health".