On March 10, 2014, it was announced that Appice had left Kill Devil Hill, and that former Type O Negative drummer Johnny Kelly was his replacement.
Last in Line began recording tracks for a new album of original material in April 2014, followed by the release of a snippet of the new track "Devil in Me" in June. The album, produced by former Dio bassist, Jeff Pilson, was announced to have an expected release date in early 2016.
In early 2014 Appice joined hard rock band Hollywood Monsters where he played on the album Big Trouble (on 8 tracks out of 11) which was released in 2014 on Mausoleum Records. The album features Steph Honde on vocals and guitars, Tim Bogert on bass, Don Airey on keyboards and Paul Di'Anno on lead vocals on the bonus track. The same year, Appice was a guest performer on Eli Cook's album, Primitive Son.