Eternal Nightmare is the fifth studio album by American deathcore band Chelsea Grin. It was released on July 13, 2018. It is the first album from the band without either frontman Alex Koehler and guitarist Jacob Harmond. The departure of the two also makes this release the first to not feature any founding members. It is also the first album that Chelsea Grin has recorded as a four-piece band, with ex-Lorna Shore vocalist Tom Barber joining the band on vocal duties. On 27 April 2018, Koehler confirmed this as well as his new solo act, Grudges, and the band released the lead single from the album, named "Dead Rose". The second single, "Hostage", was released on 1 June 2018. The third single, "See You Soon" was released on 14 June 2018.