Therion announced the last year that their last recording "Leviathan" (released that year) will be followed by two more parts, that will be called "Leviathan II" and "Leviathan III", set to be released during 2022 and 2023 respectively. On February, they published on their Facebook page the date of the second part (September 23rd). During May they shared their first single, "Litany Of The Fallen".